I have not encountered any bullies on HP as well. I am following people whose hubs are interesting to me.
Just like mariasial, i do not leave critizing comments on anybody's hub.
At the end of the day, HP is a platform for sharing knowledge, experiences and for writers to expand their horizons. We are all matured adults in HP and should leave all bullying out as bullying is wrong culture, regardless if it is online or offline.