Here are a few link building methods that may destroy your brand or get your site banned/penalized/filtered from major search engines, or both.

Directories

72. Submit your site to 200 cheesy paid directories (averaging $15 a pop) that send zero traffic and sell offtopic run-of-site links.

Forum Spam

73. List 100 Web sites in your signature file.

74. Exclusively post only when you can add links to your sites in the post area.

75. Post nothing but "me too"