You might have noticed that the “With Friends” view recently disappeared from individual user pages. Twitter Status has a post explaining this, possibly in response to an apparent outcry; it seems people were subscribing to the feed generated by this page. The feed is still available, but requires user authentication, which many feed readers do not support.
In view of recent/ongoing technical issues, I think the move to dispense with the “With Friends” view was a prudent one; they point out that it was rarely accessed but still computationally expensive. Any time you remove any feature, though, you are going to hear an outcry from those who used it, and you certainly want to attempt to meet all your users needs.
What do you think? Do you miss the “With Friends” view? Can you see a need to subscribe to those feeds?