XTEND

XTEND is a large online ad network that offers a dynamic model of online media solutions and advertising services.

From the website, for publishers and advertisers:

We combine the application of in-house business intelligence and data analysis systems with a strong foundation in customized service for clients. This, on top of delivering over 20 billion ad impressions to over 170 million unique users each month, is how we are delivering the monetization that publishers want, and the reliable ROI that advertisers value.

Advertising Specifications:

Ad Unit: Dimensions: (pixels)
Leaderboard: 728 x 90
Skyscraper: 120 x 600
Wide Skyscraper: 160 x 600
Banner: 468 x 60
Half Banner: 234 x 60
Medium Rectangle: 300 x 250

Pop-Unders
Pop-Under: Dimensions:
Full: 800 x 600
Medium: 600 x 500
Standard: 720 x 300

Advanced ads like layer ads, catfish stay-on ads and slider ads are also available (yuck!).

Publishers are paid on Net 35 days from the end of the month in which the ads ran.

UPDATE

Now transmorgified into Matomy Media.