If you like RSS and you like Plumtree, you might find the following links interesting:

This blog: http://feeds.feedburner.com/bdg/plumtree

Links related to Plumtree from del.icio.us: http://del.icio.us/rss/tag/plumtree

Plumtree’s Developer Feeds:

http://portal-img.plumtree.com/ptimages/rss/dev_additions_feed.xml
http://portal-img.plumtree.com/ptimages/rss/dev_articles_feed.xml
http://portal-img.plumtree.com/ptimages/rss/dev_samples_feed.xml
http://portal-img.plumtree.com/ptimages/rss/dev_docs_feed.xml
http://portal-img.plumtree.com/ptimages/rss/dev_releases_feed.xml
http://portal-img.plumtree.com/ptimages/rss/dev_events_feed.xml

And here's one called "Code Sermon" that I've been listening to as a podcast. Even though it's not related to Plumtree, it's a good resource for software development best practices:

http://www.codesermon.org/portals/15/podcast.xml