Google documents

I have used google docs many times before and have found it to be really useful espically if I want to open up attachments sent to my gmail account. I do sometimes find that if you edit it a document in google doc and then change it into a word or pdf doc and vis versa the formating changes for no apparent reason and takes a lot of fiddling about to get it right. However it is useful to have documents stored in a way that can be accessed where ever you are. I have also used it share documents with other people so they can edit them. I guess this could be useful within libraries when coming up with new guides or presentations where more than one person wants to input there views.