I've seen this method somewhere on BHW.
Go to any affiliate network, choose dating offer. Make tight girl's t-shirt with the link of your promoting site on it. Hire a young cutie girl. Print a lot of booklets and write something like "WOW ARE YOU ALONE, MATE? CHECK THIS SITE, YOU GONNA SEE YOUR LOVE THERE, TRUST ME! link-of-dating-site(dot)com" and send your hired girl to somewhere, where walk around a lot of young people. Somewhere near universities for example.
I don't know if this works, but looks legit.
Slava Ukraine!