if you received 500 visits in a week then it is probably a fake unless they are more popular than google, yahoo & msn all together
Games and Casino receives about 1000 hits a week from google alone, but on a variety of terms.
However, I don’t know where this search engine gets it’s traffic. Did you check on that before you joined?
Online casinos is a popular term.
Try some terms that are a lot less popular and see if you don’t get very small amounts of decent traffic. That is the way to test….