At just about 11 EST tonight, a group launched last Wednesday on MyBarackObama.com in protest of Barack Obama's support for legislation that includes retroactive immunity for U.S. telecom companies attracted its 13,453rd member and became the single largest group on the site, surpassing Action Wire, a group dedicated to keeping supporters up to date on rumors and smears. It took the group seven days to move to the head of the pack on the campaign's 17-month old social-networking site.

Mike Stark, a blogger who has helped to stimulate the growth of the group, had sent out a note to its members reporting that the Obama campaign was going to have some sort of response to the group late this evening. The third-party wiki set up to support the group later amended that notice to say that the campaign will respond tomorrow morning.

The group has had at least one success -- generating continued attention to Obama's support for an immunity-including Foreign Intelligence Surveillance Act in some high-profile places, like the New York Times.

In its response tomorrow, if it comes, will the Obama campaign thank the group for pointing out the error of the senator's ways? Will they reiterate his stand in favor of FISA as written? Will they revoke the MyBO logins of anyway who had anything to do with this whole thing? Stay tuned.

And with that, g'night.