Freelance developers, how do you get clients?

I am developing apps/websites with a friend and so far er have found our clients mainly on project-listing sites (sites like freelancer.com). My experience is though, that it always becomes a price-race, and with many projects only being small static websites, it just doesn't seem that this is the way to Go.

So if any of you have suggestions on how and where to find larger/more serious clients that will be much appreciated - it should be said that we already have quite a few projects to show in our portfolio, so I think we are ready to take on some larger projects