The fun one that is at least a bit forgivable is "I found the solution! I just followed ". It's especially fun when you keep finding multiple postings that look hopeful at first but then end up just linking back to the same dead link.

The lesson here is that it can be helpful to future internet searchers (or even your future self) to copy the relevant information or briefly summarize it instead of just dropping a URL. Especially when linking to something like an company's official support forum or posting as many companies will pull that stuff down eventually.