"Although Christians may profess to be doing a good deed by sharing their religion with others, in reality it's very often the case that they are simply not treating non-believers with the respect and consideration they deserve. . . . Atheists are treated not as human beings worthy of equal consideration, but as targets — almost as if they are being hunted. It shouldn't be a surprise when atheists find this annoying and complain."Chris goes on to explain--and I agree--that boundaries should be respected. It is up to God to overcome those boundaries and to scale a wall in the name of Christ that has an obvious "Keep Out" sign posted is detrimental to that individual ever committing his or her life to Christ. This is a good lesson to remember to treat all people not as evangelistic targets but as real people with lives, feelings, jobs, concerns, and anxieties.
Update: The article that Chris references is not original, but rather is from an atheist board. Sorry about the attribute!