爱豆搜：豆瓣人肉搜索引擎 is a Chrome add-on developed by cnvkuoo. It is a free browser extension that enhances the search functionality on the popular Chinese social networking site, Douban. With this extension, users can easily track the updates and activities of their favorite celebrities and friends. It also allows users to discover various information about other users on Douban that they may find interesting.

The extension offers several features to enhance the search capabilities on Douban. It adds a direct search button next to the username on personal profiles, eliminating the need to manually enter names. It also supports searching for "Douban Things," which is a new feature on Douban for recommending products. Additionally, the extension removes the display of this add-on on Douban's small sites, ensuring a seamless browsing experience.

Overall, 爱豆搜：豆瓣人肉搜索引擎 is a useful add-on for Douban users who want to easily track the activities of their favorite celebrities and friends, as well as discover interesting information about other users on the platform.