Google Keep is cool because it has search. However, they should let you share cards so that individual cards can become visible to several people. A Public checklist for example, or instructions to give someone. They should be editable by participants or locked but visible. I think it could work and it teaches Google what type of topics or interests similar groups of people share and consequently lets Google build a better relationship map in their database. Gotta make sure Google gets their share too.
Someone should have shown Ervin McKinness this picture before driving drunk. The up-and-coming rapper reportedly tweeted YOLO (you only live once) before dying minutes later in a high-speed car crash due to drinking and driving. Four people got killed, and he drove 120 mph. My condolences and, see above.