Ever heard of Wikipedia? It’s the antithesis of Encyclopedia Britannica; the information in Wikipedia is almost completely written by its users. This has led, naturally, to occasional abuse and other shenanighans; for instance, several politicians have had their histories alternately exaggerated, falsified and scrubbed clean.
The links are to interesting, mostly correct explanation of printed circuit board manufacturing and surface mounting. Imagine a newbie to PCB assembly reading this: Do you think it gives them the right information?