They started with wallpapers and custom branded Meebo Rooms but now they are finally doing more traditional promotional adverts that are served with a Promo Media Widget that sits inside a Expandable Tab and the base of the Meebo page. you could say the tab resides in their “status bar” to give it a more common analogy.

The first to get into the chance of use that advertising will be big brands like universal and bands like weezer.

Meebo will not only be showing those ads but will be monitoring and serving all the metrics of the campaigns.

Meebo Marketing Platform: Easy for Advertisers via Mashable