I think im getting a lot of spam profiles

If you look at the picture I have attached, you can see that the members only fill out the required fields. And all of them have these mx, tx etc in the other fields. But they all add a twitter account. Try look at the picture. The member in the picture is linking to this twitter profile: https://twitter.com/mayordavebing/status/34698788601860096

Are these profiles just spam? Now I have downloaded a recaptcha plugin, and I dont get any new members :slight_frown: Then all my new members was just spam. Am I right?