Most people are afraid of linebreeding and inbreeding. Linebreeding is basically a distant form of inbreeding. There is nothing wrong with inbreeding. The main thing you must know is you aren't going to get anything that isn't already in your chickens' genes. That can be bad, that can be good, but you will never get anything more that what's already there. Traits for type, color, and temperment are genetic and passed on to the offspring, sometimes skipping a generation or two, sometimes not. The breeder is the only person responsible for culling out the traits he doesn't want or are undesirable. So in a nutshell, inbreeding is chancy of getting something you don't see when you look at your chicken, and may not even want. But sometimes it works the other way.One must be on guard to not lose those traits already there you desire. The icing on the cake is, if you diligently cull, you will be reward with a chicken that is dominant for those traits you want to pass on to the offspring. In other words, his/her "stamp" will be established. Having said that, inbreeding is often misunderstood and overwhelming for a beginning. I would suggest some reading on the subject.