Super cool project! I tried solving the search quality problem (for technical content like engineering blogs) a while back by filtering using heuristics based

Super cool project! I tried solving the search quality problem (for technical content like engineering blogs) a while back by filtering using heuristics based on websites/urls. At one point I was experimenting with RSS, but found that many websites only show the past X number of entries and gave up that direction since it excluded too much content. Are you seeing a similar problem now?