I have been using Bidvine for a while as a professional yoga teacher.
Maybe it is good for service seekers but clearly not for professionals. You have to pay every time you contact someone and often don't get any answer. Professionals do all hard work by placing their profile, certificates, reviews, etc. But service seekers also should be screened and charged. Now many of them seem just browsing and not looking to hire a professional. They don't bother even to answer to a message which is paid by professional. Frustrating!