"There's a new web-based RSS aggregator on the scene called MediaTuner. This one in particular focuses on rich media feeds like vidcasts/vlogs. They even offer a screencast overview."
(Via Micro Persuasion.)
There are more and more web based RSS feed readers that are coming out these days. I've lost the link for another cool looking RSS reader I found, but the choices are suddenly getting bigger than just bloglines, Rojo and Newsgator Online. Considering the problems people have been reporting with bloglines, this might be a good chance for others to gain some users.