There is also a small scam source in Kazan, but it's really small.
1 189 Fully developed dating website utilizing PHP and My SQL.
They are actually from Mari El, but just saying they are from Kazan.
Another source is in Lugansk and Donetsk (in spite of the war going over there, believe it or not! In most cases you can tell that the girl is a scammer just by looking at her profile. Most scammy profiles start with words "I the sociable girl", "I the cheerful girl", or whatever, with "am" omitted.
The links on the other websites are called external link.
You should not have too much external links on your website.