yahoo pipes (rss feed & aggregator)
http://pipes.yahoo.com/

and 360 which seems set to take on umm. myspace(? facebook?)
http://360.yahoo.com/

…and then there is new aol video website which also has taken the place of the wonderful multimedia search engine, singing fish. From what I’ve read elsewhere, singingfish was purchased by aol in 2003, but they have just recently taken down the whole site.