I'm a subscriber so I have self-interest in you being successful and I've paid money to help support that. If there's one thing I would encourage/plead you to do, it's to hire one person who will do "advocacy marketing". You said "Marketing is hard" and there's no doubt. But you'll know the right person, because they'll be __more__ excited about talking about your product and how it can be used, and who can use it ... than even you are. Most importantly, they'll just do that one thing. RSS/Newsletters is an area of content that geeks love - so finding someone who wants to __regularly__ talk about that in content, video, <forums that count> would be massive. I'll stop there ;-)