I see this ALL the time. Its very, very frustrating and I think its a lack of bibical knowledge and Christ's teachings. I just saw, again, a person calling themselves a Christian post a comment on youtube saying those that didn't like and mocked a certain movie should be thrown in prison..THEN told them to quit sinning and turn to Jesus... Their channel showed they refer to themselves as a Christian and promoted it yet they say things like this? Contradicting scriptures of loving everyone..even your enemies. Its not very nice let alone loving to say everyone that mocks some silly movie should be locked up then in the same breath tell them they need to quit sinning!
I see more of a NEED for these type of Christians to be taught even the basics of Christianity then anything else. I do this by giving them scriptures to show they are really not following Jesus' teachings and I put on video's with scriptures showing the lessons Christ has taught us. It not only helps them but many nonbelievers have commented too..so it works in a two fold way...teaching new Christians..and reaching nonbelievers. The most amazing thing about the internet is whatever we say...whatever video's we put up are there working 24/7 for anyone to access and be affected by even when we are sleeping! lol.
I was listening to a Christian radio broadcast the other day saying how if we aren't using the net to get God's Word out we are missing a huge chance to reach a whole generation of people that get most of their information off the net.
So what are you doing to teach and witness on the net?