"I own the collection of comments on my blog, and you own the comments you've placed on my blog and all others. I should be able to back up a complete set of comments on my blog, and also back up a copy of all comments I've placed on all blogs."
APML allows users to share their own personal Attention Profile in much the same way that OPML allows the exchange of reading lists between News Readers.
Free transfer for files up to 2GB for free, password files, customize how many times each file can be downloaded and how many days it will be available, ZIP and encrypt multiple files.
Adobe Share allows you to share, publish and organize your documents, e.g. embed a Flash preview of your document on any website. OK, it's a beta, doesn't seem to work for me.
WebCite® is an archiving system for webreferences (cited webpages and websites), which can be used by authors, editors, and publishers of scholarly papers and books, to ensure that cited webmaterial will remain available to readers in the future. Authors
Mashable write up of our Twitter article: Alan Cann, Jo Badge, Stuart Johnson, Alex Moseley. Twittering the student experience. ALT-N, Vol. 17, October 2009. http://newsletter.alt.ac.uk/xrctg5ovlfkimsphpsy77s
TinyChat is about as simple as a build your own web chat page could be. You just click a button to create a room and then enter the room or copy the link to share with others.