Another developer has written his reasons for being involved with Debian and this is essentially the same philosophy I have. Below each package description there is some places you can click. These are links to other information about the package. Stable takes you to the Debian web page describing the stable package. Unstable takes you to the Debian web page describing the unstable package.
Most upstream sites have some interesting information about the package.
Bugs takes you to the entry of the package in the Debian Bug Tracking System.