Giving out your last name on the internet is a lot bigger of a deal than giving out your first name. If someone has your last name, they can find out pretty much anything about you. I’ve found multiple random internet people’s home addresses (I’m not a stalker I promise!) just by doing google searches with their names. Imagine if I was actually trying to stalk them.

Also, personally, I kind of wish I hadn’t given out my last name. Oh well.