http://marysuefanfic.tumblr.com/post/109564516724/sga-reversebang-poll is where I attempted to give us a Tumblr presence. I'm afraid that it's absolutely not my medium (I think I need to have a certain amount of posts before they start showing in the tags? so nothing I post is ever visible? IDK /o\ I find it immensely frustrating.)

I'm not really sure how welcome people would be to being reblogged (I assume you mean the art itself, and not just a link); that would have to be something we discussed. Once we do have details and things sorted, a Tumblr might be possible... provided there was a Tumblr-savvy person (i.e., not me) to run it. - busaikko