Agree but at the same time I hate when I feel constrained in writing.
That's how I felt on Facebook and Twitter which is why I quit both. I hate caring about what people from my highschool and home town might think about me. They just don't get me.
I'm really glad I quit those sites and came here instead. I feel less limited. But like you say sometimes it's scary because yeah .... something you post could come back to haunt you. I choose not to let it limit me ... feels too good to write freely without caring.