Online Christianity or online religion creates a completely different environment for people to grow and learn. There is a security when dealing with online community because the people you are "fellowshipping" with do not actually know you. You can be completely open and share you fears, your addictions, your struggles and things you would not even tell your best friend because what is said in these communities stays in these communities (as long as one of the members doesn't do an investigation and come hunt you down). 

Online communities or churches are places where you can get stuff off your chest, where you don't have to fear what people think of you (if they don't like you, you can go to a different group or just change your username), and where you can be yourself or someone else completely. My question is if this is a good thing or not?

I think that there are good and bad things about online Christian groups. It is not that noble the way that online communities skirt around dealing with your problems with the people around you. It seems like the easy way out to just deal with life with your online community so when you are sick of being "Christian" or don't want to deal with that area of your life you can just sign off and go do something else. It makes me wonder if people will begin to lose the art of working together, of conquering challenges and of selflessness. 

These communities can be a positive thing because they create an environment where people can share who would otherwise not open up in other situations. These communities might be the only way that some people receive encouragement or the only place where they can actually be heard. 

I have never joined a group or online church but who knows, maybe I will someday and I might find it enjoyable. Truth be told, I have a hard enough time keeping up with my non-virtual community here at college and at church so I probably wouldn't last long in a group.