Twitter, the popular short message service experienced a serious flaw that impacted feeds and timelines. If you tweeted accept @bdsams, you would automatically be added to that persons follow list.
What exactly does this mean? It means that anyone could force themselves into your “follow” list without your approval. For a brief period today you no longer had control over whom you will follow or who is posting information to your feeds.
Spammers and malicious users exploited the flaw by sending direct messages to some of the more popular Twitter users. Actress Felicia Day said "Wow Twitter has a huge bug, I'm now following tons of people, some of whom are trolling me."
Twitter was quick to act over the flaw. The company issued a status message indicating that the bug was remedied and that protected updates did not become public as a result of the "bug".
Thanks to Neowin user External HDD for the news tip