If your not reading Seth Godin and your a small ISV you need to be. He’s got the best marketing idea’s going, most if not all of which are easily done with the small budget most of us have. I plan on using alot of his ideas as the launch of HelpSpot gets closer. Some of his ideas are already in progress (like taking time out of coding to write this blog!)
He occasionally does workshops as well, which I highly recommend if you have the chance. I’ve been to one and it’s well worth it. If you can’t make that at the very least go out and get his book Purple Cow, it’s a must read.