DateAha!, a Merkry messaging solution, enables public comments and private messages between online daters who don't want to pay $10 - $50/month for dating site memberships.
Keep your profile with match.com, OKCupid, PlentyOfFish, eHarmony, etc. but write messages to other online daters directly on top of their profile even if you don't have a paid membership. You can claim your own dating profile URL and get an alert when someone comments on top of your profile. You can also send private direct messages without paying the high membership fees those sites charge.
DateAha also enables accountability for bad behavior and misleading profiles - you can read the comments from other users so you don't waste your time with people misrepresenting themselves or who regularly engage in inappropriate or sexually aggressive behavior. Users can report inaccurate or fake profile information or bad behavior of the person - forcing online daters to be more honest in their profiles and more respectful in their communications and on their dates. Any comment can be reported for violating our terms to prevent abuse.