The problem with recommendations in general is that they are subjective to people's feelings, often times at a particular point of time.

This is applicable to movies and restaurants. Sometimes I'm in a mood for an action movie but that doesn't mean I want to be seeing those all the time around. Similarly, there is simply time when I'm in a mood for mexican or Indian and not Italian where I may have been going to for past month.

Unless we manage to capture the inner motivations/feelings (maybe based on our online behavioural patterns?) our recommendations will just be artificially built mashed potatoes crap.