Commenting is like leaving your calling card at someone’s blog. Many times, it is your chance to make a first impression. And remember, you only get one chance to make a first impression.
Here are some general things you should and should not do when commenting:

Do keep your comments thoughtful. If you are going to comment, make sure that you actually read the post first. Don’t leave just a two-word “great post” or similar comment.
Don’t leave spam comments. A spam comment is when you just troll for people to come visit …

Like most online communities, the Twitter world has developed its own unique language. Here’s a basic cheat sheet to help you jump in without feeling like you need a translator.

Tweet – Another word for a 140-character update.
Tweeps/Tweeple – Short for “twitter people.” Your friends and followers in the twitter community.
Hashtag – A hashtag is used to keep track of a topic that many people are talking about. The hashtag is the pound sign (#) followed by the chosen descriptive word of the topic. As an example, during the Blissdom conference, …