Twitter is a good tool if you use it correctly.
Like all social media, its another story telling device and different stories work on different platforms. For example,this blog couldn't take place on Twitter but can on Facebook.
For me, it's quick, gives you direct contact with people/companies that otherwise you wouldn't have. It's the media platform with all the new news first and because it's a short message 9 times out of 10 it is read, unlike long winded blogs like this.
Only follow and add things you are interested in, so not to clutter the feed up with rubbish. # tag are there to funnel your conversation into different feeds that should help you gain traction. Enjoy Twitter, once you understand it, tweet away..
Have a read of a book call Tribes by Seth Godin.
"A tribe is a group of people connected to one another, connected to a leader, and connected to an idea. For millions of years, human beings have been part of one tribe or another. A group needs only two things to be a tribe: a shared interest and a way to communicate". Seth Godin