A lot of people read blogs on open source projects via their respective planets. For example, I’m on both planet.mozilla.org and planet.gnome.org. You can either read content directly using your browser or you can read the rss feed for the entire planet. In either case the planet software parses and re-exports the feeds in order [...]
Last night I discovered the hard way that flickr uses slightly different GUIDs in its RSS and Atom feeds for the same entries. The format looks something like this in the Atom feed:
tag:flickr.com,2005:/photo/12345678
And in the RSS2 feed:
tag:flickr.com,2004:/photo/12345678
Notice the difference? The photo ID is the same, the tag (a year, probably?) is slightly different.
I converted everyone’s [...]