Is Kelly Osbourne leaving Twitter?

Is Kelly Osbourne leaving Twitter? Kelly Osbourne just tweeted the following:

Is Kelly Osbourne leaving Twitter? Twitter

Do you think that this has anything to do with her grieving on her best friend's death Amy Winehouse? Now if you look below, you'll find these tweets:

Apparently Kelly Osbourne had a Twitter confrontation with DJ Luke Worral, Kelly Osbourne former fiance. According to People, Kelly Osbourne and Luke Worral got engaged in November of 2008 but they broke up on July of 2010. I looked at DJ Luke Worral Twitter page and there was a gap on his tweets from July 22nd to July 25th. Also I didn't see anything other than" lol's" on his tweets, so it appears to be that some tweets could have been deleted.

Aside from everything, the point is that in general, that's the not 'so positive side' of social media. People can be really rude sometimes. It's up to us on what we do from the moment someone starts saying  things that can offend us. The best thing  to do is to block the person off Twitter, period. Other than that, it's really hard to stop Twitter bullying and, that's a big concern that many celebrities are facing today. What do you think about this whole thing?