These are all based on popularity and online activity which are terrible indicators for a lot of application domains.<p>They give you a rough head count yet you have absolutely no idea what percentage of them are actually good programmers you&#x27;d want to hire.<p>Usually the more popular something is, the more you need to weed out bad candidates as well; its kind of killing the popularity argument.<p>If you pick a technology based on its popularity or visible activity you&#x27;re only making it much easier for your competitors to crush you really.<p>I can only refer to pg&#x27;s Beating the Averages at this point: <a href="http:&#x2F;&#x2F;www.paulgraham.com&#x2F;avg.html" rel="nofollow">http:&#x2F;&#x2F;www.paulgraham.com&#x2F;avg.html</a>