I’ve always recommended Lavacon for technical communications professionals, but Lavacon 2010 is going to be particularly useful.
The focus for Lavacon this year is on social media, particularly for marketing, building your brand, and creating effective alternatives to more classic options for creating and distributing documentation. There’s a long list of impressive speakers.
Lavacon is in San Diego this year (another good reason to go) at a fabulous hotel (ditto!) and it looks like it’s going to be a real relaxacon. It’s also very reasonably priced. Take a good look at the Lavacon website and you’ll see what I mean.