I don't know if any of you are familiar with what they call a Blog Train, but generally they are something traditional which artists who create digital scrap kits and the like use to share their work and bring some attention to their blogs or websites. I have been doing this in another arena (psp) for a while now, and frankly I see no reason why something like this could not work for artists.
Rather than upload your free images etc to places that offer free stock, and who don't help promote your own sites and blogs, this will be a new way to share your work to the world.
I have started a group specifically for this, which you can find here:
It will explain more on the front page. Note, this is not your normal feature group, but is being used for the sign ups and discussions for the trains.