Added to bookmarks!
It may become my favourite website for procrastination. :)
What I don't like is two-column layout: it makes title boxes have uneven height. Even both columns have different weights.
It would be nice to see numbered list for sites with numbered postings - like HN(of course, if it's not by design, for example, if your project uses custom ranking and selection systems for publications).
I really like the sources and amount of content you picked out. Good choice of a domain as well.
But like sangupta and amirf I think you should improve the UI a bit; maybe have a go with twitter's bootstrap?
One thing I really would like is that you skip the two columns and narrowed it down do one column and worked a bit on the navigation so that it's on one line or grouped in some shape or form.
When we see people complaining of the excess of Bootstrap sites around, they tend to forget what they would feel/look/be like before such frameworks existed.
This reminds me of jimmyr.com which is how I came across reddit/digg/hackernews in the first place. Not sure how I came across jimmyr.com in the first place though :\