The secret milf club... is a dutch scam site.
I had two replies that were exactly the same word for word
When you say that this is your last credit, yes you have to pay for every mail you send!! they will say, please put more credits on darling or hun.
You will get 100's of emails a day, some will say - I like your profile photo. I didn't have one.
TOTAL waste of time
Pros
nothing
Cons
Everything, you will be fleeced and you won't meet anyone.