SCRIBD

http://www.scribd.com/
mostra files + google docs

Origami Bonsai Electronic Magazine Vol 3 Iss 1

MIX

http://www.makeuseof.com/tag/40-unusual-websites-you-should-bookmark/

MAST

http://archive.stsci.edu/vo/mast_services.html#GET

XMETHODS

http://www.xmethods.net/ve2/Directory.po

COCOMA

http://www.ecocoma.com/rss_webservice.aspx

YDN

http://developer.yahoo.com/rss/

FLICKR

http://www.flickr.com/services/api/misc.urls.html