Well, it's very neutral and minimalistic, but I guess a lot of interesting content would make up for it :-)
* Maybe a subtle off-gray would be more interesting than the grey that's there now? Even one of the pastels, but maybe just pick one or it'll look like my little pony.
* I think the bright yellow on white is a bit hard to read.
* Also, I don't like that the top-graphic goes off the top of the screen. Makes me wanna scroll up, even when there's nothing there, but maybe that's just me.
But nice clean overall impression, and nice font.
* Maybe a subtle off-gray would be more interesting than the grey that's there now? Even one of the pastels, but maybe just pick one or it'll look like my little pony.
* I think the bright yellow on white is a bit hard to read.
* Also, I don't like that the top-graphic goes off the top of the screen. Makes me wanna scroll up, even when there's nothing there, but maybe that's just me.
But nice clean overall impression, and nice font.