Have I Been Sold? is a free service which lets you check our database of purchased emails and see if someone sold your contact information.
Didn't find any since I started getting Spam after using this.Cons:
Started getting Spams 2 days after I used this.
After reading some "positive" reviews I've entered my e-mail there. It seemed legit. However, 2 days later I started receiving Spams. I rarely receive Spams. It can't be only a coincidence..Matheus Baumgart has used this product for one week.