Twitter- Good or Bad?

I was reading an article on theslot.com entitled "How Twitter Makes You A Better Writer" and I understand that their are benefits for using twitter. It can help writers in some ways to trim down their writing without being too wordy. Twitter only allows a person to use 140 characters so it's important to be able to just say what you want. The article also says that Twitter can help writers to "exercise" their vocabulary in order to get your "message across." This means to use different words that are shorter, better, and fit the limit at the same time. It also gives you an oppurtunity to edit what you write and keep changing it until you arrive at what you want to say in a 140 character limit. Jennifer Blanchard, the author of the article says that Twitter helps her write better copy and it is a great way to improve wriitng skills. I do think that Twitter can be useful, but I feel that this site is unnessary and many people don't focus on trying to condense their writing. If anything, their writng is worse because they only have 140 characters and certain words such as "cuz" instead of because will be used. For the people that use Twitter as a benefit, that's great. But others use it to tell the world about useless and irrelevant information.