Internetiquette going to Podcamp Ohio

So, I’m is hitting Podcamp Ohio on June 28th (next weekend), and I’m doing a session entitled “Podcast Visibility & Internetiquette.”

Session description:

This session is a round table discussion about how to properly and appropriately interact with your audience online. It is important to know where the line is between properly promoting your content, and driving away viewers and fans with overly zealous marketing and poor knowledge of netiquette. The discussion will include a brief presentation and then a casual exchange about how to properly use social networking sites, blogging, email and microblogging services like Twitter and Pownce to keep fans updated without turning into a spambot.

What I want to know from all of you is this:

How much self promotion is TOO MUCH self promotion?

Sure, I have my own opinions about where the line is, but I want to get an idea of what the rest of you think. Where do you draw line when it comes to someone on Twitter, or Facebook, or (shudder) MySpace plugging their work and giving you links to their projects? What types of self promotion really turn you off of a project or even a person altogether? Who do you think does self promotion well, and who have you seen cross the line too many times?

I want to start off my session with some things that are commonly understood to be faux pas in online marketing and some advice on basic ways to do it right on a few of the commonly used sites, so help me to understand where YOU, as an online content consumer, draw the line.