If you receive spam, it means that your email address has become known to bulk mailers. Most of us choose not to be anonymous on the web, and thus spam is a fact of life. For example, you could set up a filter to move messages containing XXX to the trash. Just delete it. Don't feel obligated to open and read every message.
Much spam is obviously junk, so just delete it immediately.
Report the spammers. Unfortunately, for some reason many spammers include a bogus sign-off email that will bounce if you send to it. Sign up here.