It seems to me that the greatest difference between what we do and don't post, comes down to location!
For example, Irish guy who commmented early on is just running a muck, good work. I'm in Australia, I have openly posted an article or two every week for the last 2 or 3 years I guess, and not once have I had any negative feedback on it, I have about 480 contacts, the majority of which are 20 - 30 years old. I have a few religious friends who frequent FB but wouldn't dare to pipe up and comment or debate me, which is a shame really, it helps everyone to see the flaws in their logic when they finally pipe up and claim something rediculous, the only comments I recieve are basically encouragement, and not always comments from Atheists but friends who are sitting on the fence. It all comes down to our secular society, we're simply growing up without the church, and even better, we're growing up with filthy amounts of science. Which brings me to the other thing I regularly post, science videos and articles, I get good feedback from them, the odd video/article on religion slots in nicely, especially an article about christians brainwashing Africans into homophobia etc. Or the usual Pope articles go down nicely.
Clearly our circumstances are all different, but I have to say, I'm just running loose, getting away with whatever, the religious friends I do have, know they havn't done enough research to make the grade, and back off real quick, which again is disappointing, I don't want to bully anyone into silence, just reason them out of the darkness!
(Add me on FB if you like - Ian Luke, Australia. Just mention you're from Think Atheist, I love to network!)
When you say, "It seems to me that the greatest difference between what we do and don't post, comes down to location!"
Do you mean you've noticed a geographic correlation to the types of things people post?
"For example, Irish guy who commmented early on is just running a muck"
Honestly not sure if you mean this as a good thing or a bad thing...
I am reading your post and all of the responses with interest because I wrestle with the same question. It becomes doubly difficult for me because a lot of business associates and customers have access to my FaceBook and Twitter pages. Nothing seems to alienate people faster than the mere fact of atheism.
The way I have been handling it is to post (or re-tweet) things relevant to atheists or presenting an atheistic pov, but I do not ever comment directly to anyone else's religious posts, no matter how absurd it may be.
The one exception I have been running into is when someone posts one of those atheist-bashing "jokes" like the "April Fool's Day" one. I am fortunate that I haven't seen such nonsense via my FaceBook or Twitter pages, but I am seeing it on ActiveRain. I've spoken up a few times. I was deleted and/or condescended to each time, and was even warned by a "well meaning" person that if I kept it up I would sound "strident" and "angry."