On Syn's suggestion I've set up a communal photobucket account in which we can store renders for everyone here to use.
Load any renders if you're comfortable with other people using them and ensure that they have been RENDERED BY YOU.
And feel free to use anything that's in there.
Here are the details...
Image hosting, free photo sharing & video sharing at Photobucket
This is only for renders
Here is a Render Tutorial made by Syndrome-X :
Other render resources:
Renders pictures by Kulvax07 - Photobucket