I am probably one of the few affected. I follow a good number of people on twitter. And since one cant live life watching the timeline, I would use Google reader to asynchronously follow the tweets of a few good people on it.
It was nice, very useful to bookmark, to be on top of just one persons timeline and also in a restricted workspace environment I could get to see important tweets.
And now, these intelligent people have stopped RSS feeds on twitter.
Update:RSS feeds are indeed available, just follow this post on how to do it...