Can someone explain why they aren't able to make enough off web ads?

It's only a web ad and may not actually appear on television.

Roughly 10 to 15 percent of the total budget will be spent on Web ads.

Or what's even more disturbing, a web ad is served by a malicious site.

New forms of Web ads continue to appear, leaving anti-ad software scrambling to keep up.

The average for most lead-generation companies is less than $2 earned for each dollar spent on Web ads.

The Paul team have turned that into a fundraising opportunity with some hard-hitting web ads:

Next step in wearable computing: t-shirts that display annoying web ads.

It also gives Internet users easy access to the current campaign's Web ads, which are more prevalent and troubling this election year than ever before.

The women who appear in Web ads for the dating site True.com almost certainly do not need to look online for a date.