Avoid PBNs, link farms, automated networks. Private Blog Networks and similar schemes are high-risk and have triggered manual actions and major ranking drops. Don’t touch them. Search Engine Land+1
Buy editorial / branded placements only. Prefer sponsored posts on real sites that publish quality editorial content and are transparent about sponsorships. Ignite Visibility
Don’t buy links that pretend to be organic. Hidden links, site-wide footer links on low-quality sites, or anything sold at scale for cheap = dangerous. BuzzStream