Well i like your site and i wonder why i miss it in the first place. Still needs improvements and some simple things,like a drop down menu in an alphabetical order or Newest/Longer active bounties.
It's a good efford though for start and i hope that you will continue/improving it.

BTW can you explain to me why some of them is highlighted? At first i think that it was the new added oned but you said 5 and i see 3...
So it's for Advertising purposes or something else?