A) I get a very bizarre error sometimes, when I'm trying to submit a tweet:
Your account may not be allowed to perform this action. Please refresh the page and try again.
This is very frustrating, because the message is within the 140 character limit, and there's no specific reason as to why Twitter is rejecting the tweet. Is it because there's more than 1 link in a tweet? Is it because there's a shortened link formatted incorrectly? I've also noticed that prefixing "http" to a link, jumps the char count by 5+5.
B) It looks like Twitter's extremely broken. Is there another tool, like Tumblr, that basically integrates well with Twitter feeds?