Naaahhh... You just don't put your email address in your ETS profile. Neither do I (on purpose), and I didn't get the spam either. Notice that all the people here who got the spam have their email address in their profiles. There are all kinds of software robots and spiders that crawl websites/forums looking for personal information like this. If you click on a link in such spam, or reply to it, there's a 99% chance that you just moved yourself from "potential target" to "verified target" in somebodies database. They get more money selling verified targets to other spammers.