Thanks, I also was not aware of it. It is a shame that some really good sites are not promoted and us who might be interested don't even know about it's existence.
HN is the closest thing I've found that addresses that -- I still have to wade through much of the startup stuff which is irrelevant in my case. When I already know what I'm looking for, using HN search will lead to me to what's out there 90% of the time.
