Dave Winer proposes a "single way to subscribe to (RSS) feeds that's vendor-neutral." He doesn't like the multiple "subscribe to this" buttons and the fact that Yahoo! is taking the lead on this.
In his answer to Susan Mernit's comment, Dave says:
Yahoo is trying to be that (the central feed vendor), and if successful, (will) lock all other vendors out.
Dave, since when could anyone "lock all other vendors out" on the Net?
Dave's proposal is here. You can imagine that Jeremy Zawodny, Yahoo's blogging evangelist, doesn't agree.