Ask HN: Where to find partners to grow my small project?

First post, longtime reader.

I am a veteran developer/tech journalist who has mostly done work for clients. I occasionally build out my own projects on the side. There is one particular project that seems to be slowly growing legs (self-link):

http://congresspedia.us

Having only done the "one man band" thing, I'd like to find some partners who might be able to take on a role in helping grow (and monetize) this project. But I don't know where to find potential partners. HN? Other hacker sites?

Where online do you attract talent, not as an employer, but potential partners and collaborators?

thanks!