Which of these are link building tactics that you should avoid? Choose three options.

Article spinning, press release link building, and forum signatures are outdated and manipulative tactics that Google's algorithms are designed to detect and penalize. Article spinning creates low-quality, duplicate content, offering no value. Press release links are often low-quality and spammy, as press releases are primarily for news dissemination, not link acquisition. Forum signatures are easily abused for spam, leading to low-quality, irrelevant links. Manual outreach, when done correctly, focuses on building genuine relationships and earning high-quality, relevant links. Nofollow links, while not passing PageRank, are not inherently bad and can still drive referral traffic and brand mentions.