Speaking as a recovering baptist, atheist who is against all forms of indoctrination (including militant atheism) and one who understands that language is a constantly morphing living thing - words change meaning over time, I am inclined to stick with the concept that the term church does not mean merely mean community of like minded, but is tied specifically to the Christian community of believers.

It remains most common understanding of the word.

For information, here is a bit of a rant, that I am still mulling over. The author is clearly a Christian who is anti-church.

http://www.aggressivechristianity.net/articles/ecclesia.htm