The big story in entertainment news today is teen actress Miley Cyrus has quit Twittering.

The Hannah Montana star quit Twitter today because her new boyfriend asked her to. Miley left a final tweet saying, “FYI Liam doesn’t have a twitter and he wants ME to delete mine with good reason,” then she deleted her account leaving her 2 million followers in a panic.

It seems the 16-year-old has discovered what a lot of other people already know: that Twitter is literally for the birds. As a wise woman recently pointed out: most celebrities have poor impulse control. They often end up posting a damaging tweet leaving their publicists to cover their asses by lying and claiming the Twitter account isn’t theirs.

There is no really good reason for established celebrities to have a twitter account other than to see how many “followers” they can gain. For that reason, Twitter is a narcissist’s playground. For the insecure celebs with low self esteem, it provides a forum to exercise their false superiority over others.

There’s really no surprise that the three biggest narcissists in the industry: Oprah Winfrey, Sean Combs and Ashton Kutcher, have millions of followers yet, only follow a few hundred back — if that many.

The other end of the spectrum are the non-celebrities who sit up on Twitter day and night hoping celebrities will respond to their tweets. Or the Twitter addicts who tweet randomly about every mundane aspect of their lives in the hopes that some other sad Twitter addict with no life will follow them.