A few years ago I was an avid listener of Colin Cowherd's radio program. Like him or not, he had a pretty wise take on Twitter. He believed that Twitter was a loaded gun, meaning you could hand it to someone and they would be likely to shoot themselves (or someone else). I think he was on to something.
I tried Twitter before it really hit the mainstream. I wasn't an original user, but I was probably in before you were. My company at the time was looking for exposure and all of the marketing people I spoke with told me I had to get on Twitter. I had both a company account and a personal one. I did not last long. At the time I was a user the LPGA was just starting their campaign on Twitter as well. I followed Christina Kim and Michelle Wie, among others, and the nasty comments made to them by random people went beyond the definition of mean. I didn't know if I was supposed to be offended or, as a parent, concerned that someone might be stalking them. I quickly left Twitter.
Colin's main point regarding Twitter was that the filter is removed. People can say things they think in their head that they would never say in person. Just type it into that little bubbly prompt and hit "Send." Ninety plus percent of tweets go without a follow up. But the five or ten percent can be dangerous and damaging.
Just ask Ted Bishop.