> While rare, sometimes it's a problem with the compiler. Otherwise, it's always DNS.

I don't quite understand this one? Does it refer to domain name server? So if you're having network issues it's always DNS problems?

> Corollary: Most code out there is terrible. Sometimes it's easier to write a better version yourself.

I never cut-and-paste directly from stack overflow. I cut from several sources, combine the best practices and adapt everything to make something novel, and hopefully "better". But i think it's important that you understand what it does before you use it. This might seem self-evident, but my experience tells me not everyone agrees with this methodology. If i find inspiration to a solution, i usually leave a link to the original source or stack overflow page.