They wish to find a serious relationship that will eventually lead to marriage, so basically it gives you a pool of women who may or may not be the girl for you.
I believe that this is the safest because you don’t have to deal with the pimps, robbers or snatchers that might wonder in the streets of the Philippines.
As for efficiency, there are a number of successful stories from couples who find each other via online dating sites.
So how do you know if someone is trying to scam you?
It details how scammers operate fake dating site profiles in order to con men out of money.
The guide isn't available for free, in fact, it was being sold for Bitcoins on a deep web marketplace.
However, I personally suggest that you try online dating sites like Cebuanas.
All the girls there are real and they are responsive.