[rriepe]

If you've built a good web app, you've already done 90% of this work on your main page. All that information you're trying to get across to potential customers is information that will inform the journalist.

A good about page can fill in some of the rest if you write it well. Your greater mission, team history... whatever's interesting. Write about it here.

A media or press page can do the rest if you decide to go with it. If you've done your work elsewhere, this can be as simple as a preferred contact e-mail and a clean, hi-res logo file (and yes, the transparent PNG is best here). Or, just put this stuff onto your about page for the same effect.