Spam registeration, any way to block it

I am a local business in the Tampa, Florida, in the past 3 weeks i have been getting email requests for registeration like this on the bottom

my questions is: is there anyway to block those spams? or even block the request of registeration?

i have installed the JFBConnect component and if there is anyway to block regsiteration in easy blog and make regsiteration through only JFBconnect?


Hello administrator,

A new user has registered at Computer Repair Franchise | Apple Repair Franchise.
The user has verified his email, and requests that you approve his account.
This email contains their details:

Name : Rosemarie Wild
email: todd280@aid.ketrzyn.pl
Username: rosemariewildli

You can activate the user by clicking on the link below:
http://gadgetsrepair.co/component/users/?task=registration.activate&token=fe319fdce971615c0ba6fb3db92e094d