In the green tree theme, the user-photo border blends in with the new transparency layer (or at least it does on my screen). Look here for an example: http://www.drop.io/ddjku4a
Perhaps the color of the border could be adjusted so that it stands out more?
I think it'd be a great idea if Pownce had some CSS rules specified for the dynamic pseudo-classes :focus just like is already there for :hover. SRSLY. Group a :focus selector with all the :hover selectors that have already been declared, and you're set.
This would really benefit keyboard navigation, and perhaps some other alternative assistive technology devices out there.
One last thing :focus {outline: 0;} ought to go as well. Add overflow:auto if one must.
Cheers!
p.s. Get Satisfaction could benefit from this, as well.