finding love in russia and ukriane

Hello I am running a dating site
It is a dating site between east and west. I started this site together with my boyfriend (we meet trough a dating site our selves) It is going well, we get allot of new members but like on every dating site as we have understood there are some scammers joining. We have taking actions against them. Using IP-address control so we dont get women from Africa and we also ask our women to give out their contact information so we can contact them but still some of them come trough. So if you guys out there got great suggestions of how to work against them then please let me know! We want to keep our site as clean as