I thought I might open this one up…I had an email from Ross (so far, commenter #1!) outlining that whilst the thinkfree.com site was alright, Scribd might be a better and more social, web2.0 option for sharing docs. Looking at their site, they seem to have better intentions, namely creating the worlds largest open source library of docs (very google!).
Does anyone know of any other sites out there that can log and store docs, and provide easy access for people following links?
The Squiggly Line 
I believe Skype allows people to share documents and leave messages etc for each other. May be time to have another look at it.