When you post an announcement on Twitter you can use a hashtag (#) after important keywords. People use Twitter for search and can find you that way. For instance -- say you have a boook review to announce. You could tweet: Read my review of 'Title of book' http://yourlink.com #bookreviewsWhen someone searches for bookreviews you're tweet will be given more prominence in the results.
Twitter is basically like a never ending stream of conversation. And I always think of it as a river: I jump on when I do and ride out the current conversations and then jump off later.Don't worry about missing things, because it's constantly moving. :)Nerd Girls at Books to the Sky