![](https://64.media.tumblr.com/401357924e68bb9f85553703adf6fc6c/tumblr_o7v17pabm01uj00smo1_500.gifv)
Had an idea today for a filtering service for phone calls. I could see this being accomplished a number of ways. Could be a neat machine learning project. Would need to maintain a repository of known junk numbers and possibly use user-feedback to feed the algorithm.