Create a public, real account on myfxbook.com and let them find you. If you contact them directly, you can link them to your myfxbook account to give them an instant view into how your algorithm has performed.
it's the most liquid market on earth, it's 24 hour for the majors, its depth is enormous, and it is less prone to event risk than individual equities (as long as you stick to unpegged currencies) so you can get tons of leverage on it.