By Mary Rose Maguire – Follow her @MRMaguire
When you first join Twitter, it’s a slightly crazy world filled with celebrities, “wannabe-celebrities,” multi-level marketing folks (“Make money from home today!”), major brands, regular folks, and every kind of spammer you can imagine. It’s easy to spot those who will not add anything of value to your stream. On Twitter, you have three choices when someone follows you:
1) Follow them back.
2) Don’t follow them back but allow them to continue to see your tweets.
3) Block them, in which case they won’t be able to see your tweets and will not show up in your “followers” list.
Usually, most people decide not to return-follow an account. Sometimes when you’re new, following back can make your follower list look more robust. Other times, you may not really care if a realtor from Alaska is following you but since you live in Hawaii and have no intention of ever moving to Alaska, you’re not following them back.
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With Twitter implementing the new “report for spam” button that has been buzzing as a trending topic around the Twittersphere this article is right on time. Stalkers beware: Twitter isn’t therapy it will only increase the number of people you’re following. 
A short definition of hashtags:
According to eMarketer, by the end of 2009 there will be 18 million adults in the United States who use Twitter. Most of these 18 million Americans want to lose weight. The obese Americans want to drop into the overweight class. The overweight Americans want to drop to a normal weight. And the normal weight Americans want six-packs.
CoTweet.com