Are Blog Comment Backlinks Still Worth It? A Retired Cheat
"Great post!" plus your link on blogs that publish every comment. Most comments were never approved, and the links stopped counting.
Link Building
Do Backlink Generators Still Work? A Retired Cheat
One click, hundreds of links from auto-made pages. It used to look like magic. Google's crackdown on link spam ended it.
Unlinked Mention Cheat: Turn Brand Mentions Into Backlinks
Find pages that already name your site but do not link to it, and ask for the link. The easiest backlink there is.