--verify-sig: Have a default of URL patterns (regex and/or pcre)
We could automatically enable --verify-sig for a list of URL patterns/sigtypes. These could be defined in ~/.wget2rc and/or be kept as a list by distributions. Once installed, the normal user doesn't even have to know about GPG or anything. Only if the sig is wrong we should tell him about it and how to circumvent it.
--verify-sig-pattern=[regextype[,sigtype]:]URL-pattern,...