Another unusual request is that Microsoft asks users to reboot their computer after installation. Neither Opera nor Mozilla Firefox require a reboot. Unique to Internet Explorer 7 is an RSS feed engine that renders Web feeds as a readable page, and a reboot installs this engine in the system kernel. For the most part, we like the built-in RSS reader feature. Opera includes a newsgroups RSS reader, while Firefox allows you to associate RSS feeds with third-party readers.