If you have a profile, you can specifiy what countries you are not interested in and block them. Not that anyone is likely to read it.
AW have a long list of countries they don't like: Albania, Austria, Belarus, Bosnia and Herzegovina, Brazil, Bulgaria, Croatia, Czech Republic, Estonia, France, Hungary, Italy, Latvia, Lithuania, Macedonia, The Former Yugoslav Republic Of, Moldova, Republic of, Philippines, Poland, Romania, Russia, Serbia and Montenegro, Slovakia, Slovenia, Spain, Ukraine, United States. (Philippines are the most off the chart, with AW saying in effect, "No offence you bastards, but there is such an overwhelming majority of lying cheating criminal bastards among you that it makes good business sense to have fuck all to do with you. A bit unfair Mrs Masawo on the corner of Pablo Ocampo but that's the way the tought titties swing honey"*)
They also
"In an effort to combat those who seek to defraud the Site and it's membership we have added Nationality to selected profiles. Typically this is profiles of those with an Eastern European nationality that are residing in a different country. We are still formulating our policy on displaying this information and whether it will be usable in search criteria in the future, (currently it isn't). If your nationality is appearing on your profile page and is incorrect, please get in touch and supply documentation to support the status of your current nationality and we will update your profile accordingly. We accept that some members may be domiciled in a different country than that of their nationality but that does not make them nationals of that country. This includes being settled elsewhere or registered with government bodies. Whilst we are loathed to act on the actions of a few that may affect many, due to the amount of deception being undertaken and for the protection of the majority, we believe the display of this information is justified. Any member who feels they have a workable solution to help combat false or fake profiles or profiles with misleading or inaccurate geographical information can lodge their ideas via the Suggestion Box."
*Not their actual words, but you get the drift. Quotes are from their 'help' files.