Foursquare uses its unique location technology and foot traffic panel to produce personalized recommendations of spatial items such as restaurants. Recently I've read a paper LCARS: A Spatial Item Recommender System that I implemented from scratch in R.

The recommender system combines the querying user's interest and the local preference …

Many people like watching movies, and I do too. Recently I've discovered this somewhat sketchy Korean site that hosts quite a few movies online. I call it sketchy because I almost always see ads asking me to download a piece of software that's supposed to protect my computer from a …