I was also lucky early days to have an invite and grabbed a 5 letters common word, let's say "angel@gmail.com", you cannot believe the number of stuff I receive from around the world... Spain, UAE, Australia, China, etc during those years... lastly it's mostly cellphone contracts. I ignore those emails, but sometimes I reset password and close account. One of the most annoying one I remember was from dentist appointment system in Florida or California, it was spammy a lot.