If bit.cc is your exchange, then I can tell you that you need a cleaner landing page, with your buy/sell rates immediately available. Customers are only loyal to two things in crypto: the nett price (minus spreads and fees) and the speed of delivery with fiat if you offer that. KYC/verification checks also will push them elsewhere.
If the price shown on your landing is the average between spots, then it appears you lack competitive pricing.
I think, this forum (bitcointalk.org) is the perfect place to promote your exchange, because most of all members of this forum are crypto holders and investors. And if you have an enough knowledge in crypto and you have the capability on managing, you can conduct a bounty campaign for your project, but if you're not, you can hire a high reputable bounty manager that will help you to promote your project smoothly. And hiring a high reputable bounty manager can give you a high chances of success on your project.
Actually, the forum is a good place not because people are holders and investors here, but because they're pretty much bounty hunters and speculators, if you're looking for the crowd that wants to exchange a lot. The holders and investors either earn, or trade irregularly. Advertise in the altcoin sections, rather than in Bitcoin (where the holders are who aren't likely to be very active with trading).