gre.gario.us allows users of the del.icio.us site to find other users with similar interests by comparing links they have in common.
Praise and Reviews
2005.02.08: Bibi's box
The idea seems very cool: find people with the same interests using your bookmarks.
2005.02.06: Library Stuff
My Speediest Gatherers
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Site taken offline due to popularity (cut off by del.icio.us for resource reasons) and replaced with temporary Semsym e-mail signup page.
Added cache directory cleanup cron job. Fixed for caching bug.