The above video by Propostris and Gigi, while awesome, is not safe for work.
As I've mentioned before, building a guild can be very challenging. Recruiting and retention efforts are critical. Sometimes you find members, however, that may seem to fit in, but in the end they do not. You must strike a balance between having enough guilides to get things done and a team that works well together. Your guild rules and personal interactions help determine which members are valuable members of the team and who needs a /gkick.
I have found that having a lot of guild members is generally not better than having quality guild members. There are many ways in which guild members can not fit. Sometimes folks activity times do not mesh with the guild. It doesn't really do any good to have folks tagged up but stuck PUGging raids because they can't be there for raid times. This person may not need to be removed, but don't be surprised if he or she leaves to find a guild with raid times more suited to their play times.