I honestly didn't really use the twitter we made in class at the beginning of the semester. I genuinely just forgot that it existed, on top of all of the other technologies we were using (blackboard, blogspot, etc.). I feel like (even though a majority of us neglected it) it was a really good idea and if we had all committed to it it would have really helped us out. I didn't necessarily need it because I came into the class with some of my close friends so if I needed help I could just text or call them and ask, but it would have really helped me if I didn't know anybody and I had a question about the assignments. It could have also helped us when collaborating on our group projects, but my group members all had facebook so we added each other and communicated through that.
I think that twitter is a really cool website, and I might take up using it in my every day life, just because I like to follow celebrities and people I find interesting. I don't think it's a very relevant tool for everyday communication because not everybody has internet on their phones and not everybody accesses their twitter accounts super often and they would receive a text message or email faster. But for sheer entertainment (again, following celebrities) I might use it.
If I were planning to teach high school I would definitely consider using twitter because I think at that point it would be age appropriate and most students would have one. I think it's important to show high school students that you're on their level with technology and it would make school a little more interesting for them. However, I don't think I will use it in my elementary aged classroom. I think the technology in that case isn't very age appropriate. I think it may be too complex for them and if not, it would become easy to abuse and I wouldn't want them getting out of hand or following twitters that again, weren't age appropriate.