To Twitter or not to twitter..that's the questions!  Twitter can be a remarkable networking tool if used correctly.  One annoying thing about Twitter is people who use it to post everything thing they do every second of the day.  I find those tweets quite annoying. Giving substantial information like useful links and other types of information is welcoming. To find interesting people to follow, do a search on your particular interest.  You'll be surprised who shows up.  You can follow them for a period of time to see if their tweets are interesting. They may in turn follow you or perhaps not.  I would not unfollow someone just because they decided to unfollow me. If you have not tried twitter, here's my link http://twitter.com/mhoyte.

There are many applications that go along with Twitter such as Tweetdeck, Tweetlater, Tweetchat, Twitbacks. These applications help you manage your tweets. Give some of them a try!