What are some typical ways a start up promote themeselves?

[promotapps]

I know how to make web apps pretty decently and I think I will make it a summer project to build a pretty useful web app.

What are some typical ways startups promote themselves?

[Mz]

Some recent discussions/resources that came up:

http://news.ycombinator.com/item?id=3923569

http://viniciusvacanti.com/2011/02/08/how-to-get-your-first-...

http://www.vinnie.net/2009/03/10/10_ways_to_get_your_first_1...

Best of luck.