As a member of both, no, they're really not. The information on SE is very useful but highly transient (and redundant, but at least we constantly try to rectify

As a member of both, no, they're really not. The information on SE is very useful but highly transient (and redundant, but at least we constantly try to rectify that). It'd be extremely more valuable if it could be condensed into a guide or textbook or what have you to teach idioms to beginners. As for Wikipedia, I'm almost convinced most information on it is erroneous, unverifiable, or useless in the forms it is presented. I've stopped making contributions and try not to ever reference it at all.