We've had a couple of questions in the format "Are members of $sect_or_subgroup_or_movement really Christian?", and a few more that are asking that exact question, but trying to couch it in terms that sound more reasonable.
Now, I realize that some of you may be reality TV fans, so you might think that you can vote people out of Christianity. (What does that mean? Revoke their license to pray? Ban them from purchasing Bibles? Issue restraining orders against Jesus? How is this productive?) The thing is... once you start voting people off the island, you've given up on the site. There will always be a least popular contestant. If we vote whatever sect we like least this week off the island, soon there will not be enough people to sustain the site. Not to mention, this isn't Baptists.SE, Catholics.SE, Lutherans.SE, and so on -- it's Christians.SE.
It's certainly true that the various Christian sects think the other sects are doing something wrong, else they wouldn't be separate. However, there is one Christianity.SE, and in order for it to be useful to anyone, it must be respectful of everyone. Pointing out who doesn't think $group are real Christians doesn't do anything to share expertise (what we are supposed to be doing here), it only creates drama and conflict.
Christianity Stack Exchange is not a game show. We aren't here to vote people off the island. For the purpose of this site, please assume that the answer to "is X Christian?" is always the same as "does X self-identify as Christian?" It's the only way a group with such diverse cultures and beliefs can get along and do something productive.
All posts asking for the site to pass judgement on some person or group (as opposed to describing a belief system, examining an idea, explaining history, and so on) are off-topic and will be closed/deleted.