I've proposed on Meta a contest for promoting StackApps applications developed with the API. Please consider to leave your comments over there. (Bounty +250)
This appear to be specific to Stack Apps. The text is centered on every other site I've tried. See below: Compared to how it should appear:
There's like 5 in the top few of the front page and it's a little annoying as they get in the way so can a mod just delete them they serve no useful purpose.
Currently, in the /sites method, a site can have a site_state of: normal, open_beta, closed_beta, or linked_meta. This makes it easy to tell if a main site is in beta or not. But it becomes a 2 or 3 ...