Talk:Viewable impression

Marketing & Advertising Start‑class Mid‑importance

	This article is within the scope of WikiProject Marketing & Advertising, a collaborative effort to improve the coverage of Marketing on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Marketing & AdvertisingWikipedia:WikiProject Marketing & AdvertisingTemplate:WikiProject Marketing & AdvertisingMarketing & Advertising
Start	This article has been rated as Start-class on Wikipedia's content assessment scale.
Mid	This article has been rated as Mid-importance on the importance scale.

Websites: Computing Start‑class Low‑importance

	This article is part of WikiProject Websites, an attempt to create and link together articles about the major websites on the web. To participate, you can edit the article attached to this page, or visit the project page.WebsitesWikipedia:WikiProject WebsitesTemplate:WikiProject WebsitesWebsites
Start	This article has been rated as Start-class on Wikipedia's content assessment scale.
Low	This article has been rated as Low-importance on the importance scale.
	This article is supported by WikiProject Computing.

"Viewable"

wish I could clearly understand wht viewable means here. The first sentence defines Viewble Impressions in terms of "viewability" without clarification. Isn't there a simple, clear first approximation of wht viewable means?

"Other companies to offer viewable impressions include"

is this list helpful? It could include hundreds of other companies and there seems to be little reason why these companies are listed and others are not.