Aside from not being able to follow friends or unfollow/block offensive users, what did you find most frustrating:
1) The length of the outage?
2) The lack of communication?
3) Something else?
Here are a few sample comments from twitter users:
“This just gets better!! I’m giving them until tomorrow morning and if I check it then and it’s not [...]

How do YOU feel about Twitter’s Response to the Follow/Unfollow/Block Problem? »