Post alot and like Sandra said, be your self and try and help people. Be a REAL part of the community. Not the fly-by-might sig posters.
Most importantly, leave good quality posts. Not the junk one-lines, or posts that don't make sense or have really bad grammar.
Best way to stand out is to create your own posts, and good ones. 500-800 words or more. Those will get your more attention.
And of course, as already mentioned, your signature is of utmost importance. Just like any copy or advertising, the better it is, the more clicks it will get.
I also think it takes some time to build up a reputation, one that will get you more traffic. So don't rush it, build it up