David Mann

for intends

https://chatbotsmagazine.com/the-unanswered-call-for-help-its-a-chatbots-main-purpose-yet-many-still-don-t-understand-the-f5f438af3fe8#.fizl3z15i

query context fb_first_name fb_last_name fb_timezone fb_locale fb_gender fb_profile_pic fb_id last_clicked_button_name last_processed_block_name last_processed_block_id

could be used for multi platform

http://www.benfranklinlabs.com/where-to-put-rails-modules/

write specs

handle last online