I (female half) highly doubt there is anything unique about Edmonton. Trying to find people online for a real life meet takes a lot of work and patience, no matter who you are, where you are located, or what site you use.
Not everyone is here for the same reasons. Some people are just curious. Some just want to chat online. Some just want to cam or exchange pics. Some people display unpleasant attitudes in their messages.
And then even among those who are serious about meeting in real life, not everyone is looking for the same thing. Some are looking for NSA and some are looking for FWB. Some are looking for full swap and some are looking for soft swap. Add in body type, sexual orientation, and a bunch of other likes and dislikes, and you might begin to see how complicated it really is.
If you are looking for FWB, that adds another element of complexity. Not only do you all have to find each other attractive enough, but you actually have to like one another enough to want to spend more than an evening together. It's hard enough to find vanilla couple friends that you want to hang out with regularly.
We belong to several sites, but we don't use them to find play partners. We use them to connect with people we've met at events (parties, clubs, meet & greets). There are plenty of serious people on here, but you have to wade through the rest to find them. Personally, I find it a lot easier to meet people by just getting out there in real life. That instantly eliminates all those who are online-only types.