ajax, rich text areas and frames

Hi,

I am beginning to actively use selenium on a number of my projects. Co-workers 
like it, my Boss loves it.

So I just have a few questions.

Can selenium test AJAX applications ?
Will selenium be able to support frames in the coming releases ?
Selenium does not seem to work on Rich Text Areas like RTE or HTMLAREA. It 
seems they use ifrmaes. Will selenium be able to support iframes in the 
future ?

Thanks,

Hamilton Chua