From behind a computer/laptop/Blackberry/mobile screen etc, one can be whatever they want to be. Sometimes it is hard to really gauge a person vis-a-vis their online personality.
How true to yourself are you when you convey yourself on GS? It is a true reflection of yourself?
Personally, I joke around on GS just as I would in real life. The one thing that is different about me I would say is that, I don't like sharing my problems in real life as I do not like to worry the people who care about me and if I do want to 'offload' I find it easier to write in my blog.
Feel free to discuss your own experience.
My posts are the reflection of my feelings and expressions. It's another thing that I don't get really open with the people on GS but I don't pretend.