[DannyBee]

Replace "grandma" with "person whose taste in sushi is very different" if it makes you feel better.

[prostoalex]

Mmmkay, so out of 3 ways to implement ranking:

1) Rank by popularity among all friends.

2) Rank by global number of check-ins.

3) Rank by a one-off friend's preferences.

You think (3) is the way something called GraphSearch works?

[DannyBee]

This is a great strawman that you've knocked down.

I think it's closer to #1 with "popularity" replaced by "preferences". But that has the problem that i don't care what all of my friends think about most things, or even most of them.