I signed up for the site and began receiving job emails the next day. Most of them are pretty well targeted to my interests. When I click the jobs in my email I am taken to a variety of different job boards or company sites. Doesn't seem like McCarthy has any direct relationships with these companies, but rather promotes jobs that other sites are hosting. Besides some of the jobs not being related to my profile, the site seems simplistic and straightforward. No scam I can sniff out.