This document discusses aggregating web feeds to create "planets", which are websites that compile multiple feeds into a single page. It introduces several tools for creating planets, including Planet, Plagger, and Perlanet. Perlanet is a simpler Perl version of Planet that the author created, which takes a list of web feeds and produces both a website and aggregated feed. The document encourages using Perlanet to build local planets for neighborhoods to help people feel more connected to their community. It provides tips for setting up planets and notes that testing more feeds helps improve the software by finding bugs.