When most people think of online advertising a few things probably pop into mind:  banner ads… AdSense… pop-up windows… you know… the staples.  Inline link-style ads are becoming more popular as are RSS advertising options and sponsorships.  These forms of advertising are the norm in the text-based parts of the internet ecosystem.

But what about the rest of the web?  What about the fledgling parts of the internet?  What about the things to come?

According to Yahoo! CEO Terry Semel, online advertising potential hasn't even begun to peak.  Semel, speaking in London, brought up a good point:  what about video content, social networking sites, and mobile content?  These areas of the internet are virtually devoid of advertising.  To get an accurate picture of online advertising, these areas of the web have to be considered.

I agree with Semel.  I don't think we've even begun to see where advertising can or will go online.  The potential is huge and we haven't scratched the surface.