Word of the Day: PPC

Stands for “Pay Per Click,” and is used in online advertising. PPC advertisements generate revenue for Web publishers each time a visitor clicks on an ad. Banner ads, Flash ads, and textual ads can all be used to generate pay per click revenue for publishers. Many search engines also use the pay per click model, showing sponsored results along with other relevant results for searches. PPC is an attractive model for advertisers because they only have to pay for actual traffic generated by their ads.

– definition from TechTerms


Word of the Day: Impression

Impressions track how many times a webpage or element on a webpage is viewed. It is one of the standard metrics used in website analytics software. The term “impressions” most often refers to page impressions, which is synonymous with page views. Each time a page is viewed, a page impression is counted. Therefore, a single visitor can rack up multiple impressions on a website by visiting multiple pages.

Unique impressions, or page views by different visitors, are useful for measuring the number of daily unique visitors to a website. Website analytics software may record unique impressions by either saving a 24 hour cookie on visitors’ browsers or by resetting the record of unique visitors at the start of each day. Most analytics software records both total and unique impressions. These two metrics can be used to determine the average number of pages visitors view before leaving the website.

While impressions typically refer to page views, they may also define how many times individual elements on a webpage are viewed. For example, in online advertising, “ad impressions” track the number of times individual advertisements are displayed. If a webpage contains three ad units, each page view will produce three ad impressions. By tracking the number of ad impressions, webmasters can monitor the performance of individual ads. This information can be used in combination with RPM, or revenue per 1,000 page views, to determine the ideal amount of ads for each webpage.

– definition from TechTerms

Word of the Day: KOffice

KOffice (pronounced “K-office”) is an integrated office suite for the K Desktop Environment (KDE), a desktop interface for Unix systems. KOffice is the most notable of all KDE applications, since it singlehandedly provides most of the basic productivity features needed by KDE users. Like KDE, both the KOffice source code and the office suite itself are available as free downloads.

KOffice includes several different applications, including productivity, creativity, management, and supporting programs. The applications included with KOffice are listed below.


  • KWord – a frame-based word processor
  • KSpread – a spreadsheet program
  • KPresenter – a presentation creation program
  • Kexi – a database program


  • Krita – a raster graphic editing program that supports layers
  • Karbon14 – a vector graphics drawing application
  • Kivio – a flowcharting program


  • KPlato – a project management and planning program

Supporting Programs

  • KFormula – a mathematical formula editor
  • KChart – a graphing and charting program
  • Kugar – a business report generating application

More information about KOffice is available at the KOffice Homepage.

– definition from TechTerms

Word of the Day: Finder

The Finder is the desktop interface of Macintosh computers. It allows users to move, copy, delete, and open files, navigate through folders, and move windows around the desktop. The Finder loads automatically when the computer starts up and is always running in the background.

While the Finder is a core component of the Mac OS, it is technically an application. This means users can select the Finder from a list of active applications, either using the Dock or the Command-Tab shortcut. For example, a user may switch to the Finder so he can open a window and browse to a specific file he wants to open. Once the user finds the file, he can open it by double-clicking the icon. Since the Finder is always running in the background, it cannot be quit like other applications. Instead, the Finder can only be relaunched, which simply restarts the application.

The Finder has been part of the Mac OS GUI since its inception and has gradually evolved throughout the years. It has always included a menu bar, desktop, icons, and windows, but now has several additional features as well. For example, the current Finder in Mac OS X includes the Dock for easy access to applications and files, an advanced search feature, and Quick Look technology, which allows many types of documents to be viewed directly in the Finder. The Finder windows now include a sidebar, with shortcuts to disks and folders, and support several viewing options, including Cover Flow, which allows users to flip through previews of documents.

The Finder is a fundamental part of the Macintosh operating system and serves as the primary interface between the user and the Mac. Therefore, if you use a Mac, it may be a good idea to browse through the Finder’s menu options and familiarize yourself with all the features the Finder has to offer.

 – definition from TechTerms

Word of the Day: Waveform

A waveform is an image that represents an audio signal or recording. It shows the changes in amplitude over a certain amount of time. The amplitude of the signal is measured on the y-axis (vertically), while time is measured on the x-axis (horizontally).

Most audio recording programs show waveforms to give the user a visual idea of what has been recorded. If the waveform is very low and not pronounced, the recording was probably very soft. It the waveform almost fills the entire image, the recording may have been too “hot” or recorded with the levels set too high. Changes in a waveform are also good indicators as too when certain parts of a recording take place. For example, the waveform may be small when there is just a vocalist singing, but may become much larger when the drums and guitar come in. This visual representation enables audio producers to locate certain parts of a song without even listening to the recording.

– definition form TechTerms

Word of the Day: Trash

When you delete a file or folder on a Macintosh computer, it is stored in the Trash. In early versions of the Mac OS, the Trash was located on the desktop, but in Mac OS X, it is found in the Dock. The Trash icon is an empty trash bin when the Trash is empty and changes to a full trash bin when there are items in the Trash.

The Trash serves the same purpose as the Windows Recycle Bin. Items can be moved to the Trash by selecting them and dragging them to the Trash icon. You can also choose “Move to Trash” from the Finder’s File menu or press Command-Delete after selecting one or more items. You may view items in the Trash by clicking the Trash icon in the Dock. Since the items stored in the Trash have not been permanently deleted, you can drag items out of the Trash if you wish to keep them.

Emptying the Trash

If you are sure you want to permanently delete the items in the Trash, you can press the “Empty” button in the Trash window or right-click anywhere within the window and select “Empty Trash.” You can also empty the trash without even opening the Trash window by selecting “Empty Trash…” from the Finder menu. If you want to overwrite the deleted data so it cannot be recovered even with a data recovery utility, you can select “Secure Empty Trash…”

NOTE: If you wish to delete locked items that are stored in the Trash, hold the Option key while selecting “Empty Trash.”

– definition from TechTerms

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