Finally, as a Premium Member, you will be able to see who visited your profile and when they did so.
This may seem pretty meaningless, but it’ll let you know if someone shy has been nosing around, or if someone who doesn’t have Premium themselves yet is actually really interested!
Also, if someone you’re chatting to has been visiting a bunch then they’re almost certainly trying to impress you by finding out more about you. Or, even more flattering, they just can’t stop looking at your pics!
It’s not the cheapest out there, but it’s certainly not expensive relative to the average price point and it’s also a widely trusted site with good name recognition and a track record of security.