51Link - Link Exchange Platform

51Link (51link.com) is an online platform dedicated to buying and selling backlinks, reciprocal link exchange, and webmaster resource trading. The domain was registered in 2003 and is operated by Chengdu Lanxing Network Technology Co., Ltd. It is one of the few remaining veteran link exchange marketplaces in China. The platform functions as an intermediary market connecting webmasters who want to buy backlinks to improve SEO rankings with those who want to sell links for monetization, building a complete resource ecosystem around link trading, ad space rental, and soft article publishing.

Core Features and Sections

• Backlink Buying, Selling, and Exchange: Webmasters can purchase or sell backlinks, filter target sites by weight, indexing volume, and price, and also participate in free reciprocal link exchange. The platform offers link-drop detection to help users monitor link status.
• Website Ad Space Rental: The platform provides image-text ad space placement and leasing services. The current price is displayed as 60 RMB per month, with repeat placement allowed and automatic delisting upon expiry. Each rotation randomly displays 18 ad slots, and ad copy or landing links can be modified twice per month.
• Soft Article Publishing and Content Distribution: Services include soft article publishing, content marketing, press release distribution, and bundled backlink sales, allowing webmasters to combine link acquisition with content-level promotion.
• Website Asset Trading Information: The platform also showcases website sale listings across categories such as information portals and local directories, with prices ranging from tens of thousands to hundreds of thousands of RMB, providing a reference window for webmasters looking to transfer site assets.
• Integrated Webmaster Resources: Built around three pillars—resource exchange, resource trading, and technical services—the platform offers a continuum from free link exchange for beginners, to paid advertising and marketing placement, to technical development resource matching.

Use Cases

• SEO backlink building: Webmasters who need to purchase high-quality backlinks to improve search engine weight and rankings can filter target sites by weight and indexing volume, test the waters, and observe indexing changes.
• Link monetization: Webmasters with established weight and traffic can sell backlinks or ad space, converting their site's link resources into ongoing revenue.
• Free reciprocal link exchange: Beginner webmasters can use the free link exchange feature to start backlink building at zero cost, while relying on link-drop detection to maintain link stability.
• Advertising and promotion: Advertisers who need to place image-text ads, publish soft articles, or distribute press releases within the webmaster circle can complete the entire process from slot selection to placement on the platform.

How to Use: Visit 51link.com to browse backlink listings, ad space information, and website trading resources. After registering and logging in, buyers can filter link resources by weight, indexing, and price before placing orders; sellers can publish listings and manage link status; advertisers can place image-text ad slots. The platform uses an escrow-style transaction model and reminds users that illegal content is prohibited and will not go live if it fails review.