I would focus on just one aspect that you do uniquely well.

Take Rapportive's landing page: http://rapportive.com. They provide much, much more than just Twitter / Facebook widgets but they purposely restrict what they show. As a potential user, I see that one feature and decide it is cool enough for me to install.

Providing a single, simple, salient advantage I've found works much better than trying to market your solution as the all-in-one Swiss army knife.

What is the one cool feature that you feel differentiates your product?