Better, but you need to stop ranking by points and switch to a relevance metric. There are two main issues right now: A lost of the posts are really old, and the results are plain bad. Here's some results I get when I search for "Go" again:

1. Reddit to go dark on Jan 18 to protest SOPA 2. Go Daddy No Longer Supports SOPA 3. Why we can't go back to business as usual post-PRISM 4. Right click and save as needs to go away

and so on. You could for example, instead of just maching a single keyword, look at the post contents and comments, and see if that keyword appears multiple times. A discussion about Golang is bound to have more entries of "Go" than "Go Daddy no longer supports SOPA".