reddit got its first users because Paul Graham linked to it. Remember it was a yc company. They were getting something like 3000 users a day in the first days. To me it seems that's the best reason to be a yc company, because you trade some share of your company to get free press and free traffic. Which is kind of expensive if you don't get it for free.

In your case I would perhaps consider finding a partner or something to link to you.