Registration, some search, and profile browsing is free. Everything else is not. Even reading what other people wrote to you will prompt you to pay first. You don't even know if the profile poking you is real and not a hired bpo.
Tip for consumers:
Unless you want to spend real earned money, stay away from this site.
Is this your business?
Claim your listing for free to respond to reviews, update your profile and manage your listing.