Gamefaqs hosts plain-text documents. Some of them are quite long and well-structured. Since there's no intra-document linking like with HTML, newer documents tend to have hashtags in the TOC to make Ctrl-F searching easier.
I'd much rather have intra-document links I can click on. That way, as a document author, I can direct readers to the dedicated "All The Monsters You'll Ever Fight" section from anywhere in the document without adding the string "#monsters" all throughout the document, generating false positives for the Ctrl-F-using reader.