This completely misses the point. Perhaps recruiting people from Facebook is not the best way to find humble people.

A lot of people I know use meditation or even spiritual advancement as a way to treat their inferiority complex.

After they fail to realize success in other areas of life they hang on to their egos and find a false sense of superiority in the fact that they are spiritual ones.

Some of these people are the hardest working Buddhists I know. What they truly lack however is empathy and and the desire to face themselves.

Wanting to love oneself and other living beings is more important than any other aspect of the spiritual path. Without that, every teaching is just a string of empty words.