Recently, topic advertisements have once again caused a stir within the Blog circle, with many bloggers paying attention to the development of this project. Topic advertisements have become an important source of income for bloggers. In the topic advertisement system, a blog author only needs to write an article to easily receive payment from advertisers, while advertisers can promote their products or concepts through influential blogs. Although domestically only Feedsky stands out, most foreign service providers do not reject applications from China Bloggers. With the launch of more and more topic advertisement service providers, it seems that China Bloggers also have more opportunities to make money. Below is an introduction to 20 topic advertisement service providers, including Feedsky and ReviewME. The content is mainly based on the websites' self-introductions. As for their credibility and earnings, they are not within the scope of discussion in this article.