Do you like your Gmail? Do you think that this account is a sacred domain that advertising mails can never infringe upon? In fact, we used to think so too. However, we have to tell you a piece of bad news at the very beginning of this new year: there is a weakness in Gmail which will disclose your email address to any websites that manage to take advantage of this loophole, including those spam merchants who are trying every possible means to find you.