[elimisteve]

1. Meetup Groups; 2. Startup Weekend; 3. Hackerspaces

Any Meetups related to the web -- events for developers, UI/UX, and biz meetups -- are great for networking. I'm a developer who gets emails from designers who want to talk on a big job that requires custom dev. You should be able to do similar -- find people who want to take on a job that requires more design or marketing than they can (or want to) personally do. (This may be a good way to meet people directly who need your services, not just people who will give you referrals.)

Attending a Startup Weekend hosted in your town is a _fantastic_ way to meet people, especially if you can talk shop with them like many HNers can.

It's quite the commitment, but co-founding a hackerspace has worked wonders for me. I meet a lot of smart people -- many of whom aren't web developers -- who then refer people they know to me.

If you're a designer or biz person, wander into a hackerspace near you.