PUBLIC MARKS from decembre with tags pipes & comment

Based on a Flickr username (not user id), returns a feed of comments on photographs posted by user together with the any comments a user has posted to other photographs. Filter out the any comments posted on any photographs that are not posted by the user such that popular photographs of other people won't also show up on the same feed, which as it often does,

Allows you to filter and process RSS feed data in a chain - using a cool web graphical user interface. The result can be spit out in a variety of formats that can then be used in your RSS reader, on your blog, in a Greasemonkey script

Many excellent tutorials for Pipes have been written by users, here are a few: