Ask HN: How do you ensure that the right people see your application?

I have a web application almost ready for launch, which I've built myself without funding. I would really like for people to check this out, give me feedback, review it on their blog, and possibly open the door to collaborate on this and/or other projects.

My question is as the title says; How do you ensure that the right people see this application with these purposes in mind? (besides submitting to HN - which will be my first and most important step).

Thanks, and apologies if this question has been asked before.