Squeek is perfect for a lot of people. Posting on there myself has put me in contact with 2 developers already. It's a great way to find serious or not so serious business/side-project partners.
Love the "Show interest" feature. For good UX it can be placed on the right side switching it with the users name and avatar. Basic posting fee can be lowered to attract more posting and traction.
I've had the chance play around with Squeek for a bit and liked the simple and straight forward UI. Rhys is super responsive and helpful when it comes to figuring things out :)