Another one from Alex:

YASBoS, .n, YAZZ-bawss – Acroynm, standing for Yet Another Social BOokmarking Site.

As Alex says, “the proliferation of YASBoS heightens the need for site-independent taggregation: some way of aggregating all the tagged content out there, so that you can easily track a single tag across del.icio.us, Furl, CiteULike, Jots, and whichever sites appear next week. PHP gods, where are you?”