It doesn't matter what you do beforehand, the goal is to connect them. I've built an entire app like this too and it's a great problem to solve, probably the greatest of all, however you will hit a wall in 2-3 months once you figure out that you can't market it and that you can't raise money from investors, because they have been pitched this 100 times before and they know the problems.
Just go for one use-case, really. :)