According to this new post from David Coallier, the PEAR website now includes a feature the main PHP manual has had for a while now - user comments.
For the past few days with the help of Greg Beaver (CelloG), I have been implementing user notes in the pear user documentation. This is now live and running using text-captcha-numeral and an administration backend where any developer can approve comments.
[...] Anyways, this is currently working, you have to go on a package's documentation link and then click on end-user documentation. You will then notice at the bottom a link that says "Add a note/comment".