One of the creators of RSS says that the problem of RSS overload is due to the way most RSS readers are designed, not the format itself:
If you miss five days of reading the news because you were on vacation (good for you!) the newspaper you read the first day back isn’t five times as thick as the normal day’s paper. And it doesn’t have your name on the cover saying “Joe you haven’t read 1,942,279 articles since this paper started.” It doesn’t put you on the hook for not reading everything anyone has ever written. The paper doesn’t care, so why does your RSS reader?