[keywonc]

Just tried it out.

Wasn't sure if it's ok to type "pray for my family" because I have no idea what will happen: Will it post to my FB timeline? No. Did it add me to a public directory of Shep users? Looks like it. No idea how to undo that.

Typed "show prayers" and saw a list of users who asked for a prayer. There wasn't much info though, and I didn't dare to click because again I didn't know what would happen. I don't want to send them automated messages for example.

Like you said it's interesting because you can end up interacting with other users via Shep. I guess the caution/downside is that people (like me) may be more hesitant to try features out if it can have interpersonal consequences.