Shargh newspaper reports that Iran's Telecom company has ordered all ISPs to filter blogrolling.com.
Blogrolling, owned by Canada-based Tucows, provides a popular free service for bloggers who want to track their favorites weblogs and automatically be informed when they get updated.
The service, which is widely popular among Iranian bloggers, effectively connects blogs and help form a community or a loose network of like-minded bloggers.
Many bloggers perceive this as an 'attack' to the Persian blogosphere. "I don't know what would happen next, but this is just the beginning," the writer of 'Persian Buddy' wrote in his blog.
"Soon they are going to filter blogger.com itself and we can do nothing about it," he wrote.