I've put up some google custom search engines by collecting the 20-40 most active delicious taggers for a topic, e.g. clojure, and counting their tagged domains

I've put up some google custom search engines by collecting the 20-40 most active delicious taggers for a topic, e.g. clojure, and counting their tagged domains. Works ok, a little better precision, lose some recall vs. generic google searches, but need to renew the list of domains pretty frequently