Hi Froggy, yes that's a good idea in making it anonymous on the thumbs as well, as you say may cut down that mob mentality that can develop. I gather you have experienced a bit of it being one of those contrarian posters that HC values so highly. But yes, don't really know why we need to know who has liked our posts and if it helps cut down on that mob mentality you refer to it may also be worth considering.
Perhaps they could use the "great analysis" as a test of the anomity and see how it goes and then look at introducing it for thumbs up as well.