Job listing spam

Adzuna places **** job listings on various other job portals, e.g. Career Junction, Careers24. When you "apply", instead of being presented with the job you think you are applying for, you are taken to the Adzuna website where as soon as you give them your email address, they register you on their mailing list and start spamming you with literally thousands (in my case over 8000) of job alerts.