ColourDNA is a new recommendation service. Based on geographical and social factors plus what you 'love', ColourDNA will bring up things that it thinks you will also 'love'. This is similar to the 'those who bought this, also bought this' system. It's an interesting service, and one that is absent from Facebook, recommended 'likes' based on the things you already like. However, what Facebook has and ColourDNA doesn't is perhaps more important, Facebook can show you what your friends like. Sure, ColourDNA can do this too, but only the friends who've also joined ColourDNA, which probably won't be many.