According to him, a static "Helper" or "Util" class is an anti-pattern in a language like C#, which has extension methods, so kill it!
Interesting take. I'd agree that it can greatly reduce the incidence of such classes, yes.
This is just a spot to keep miscellaneous links. It also shows you what a geek I am.
<img src="//domain.com/img/logo.png">
If the browser is viewing that current page in through HTTPS, then it'll request that asset with the HTTPS protocol, otherwise it'll typically* request it with HTTP. This prevents that awful "This Page Contains Both Secure and Non-Secure Items" error message in IE, keeping all your asset requests within the same protocol."