We have been running our startup for about a year and are looking to bring a third partner on to compliment our team. What would be the best way to find someone to meet such a unique role. (i.e. equity over pay).
It may depend on where you are. In Vancouver, BootupLabs (or the Vancouver Entrepreneur Society) is holding a 'Founder meet-up' night to try to connect start-ups looking for co-founders with people who might be interested.<p>First I'd make sure you know the skillset that you want.
Then look through your connections to see who might fit the bill.
Equity over pay shouldn't be the first thing you consider as a 'quality' of a co-founder. If it's the right person, and the right concept, go from there.
Without knowing anything about your company, your service/product or what skillset you are looking to fill I think the standard advice is to participate in local hacker meetups and introduce your startup to those potential partners. Another route would be to place a job ad for the position, e.g. Craigs List under "internet engineers."