Don't know if you've heard of this one yet. I started using it over the weekend, and so far am quite impressed. Works very well for those of us who do a lot of web research. Thought it might work well for your current weblog/education freeware initiative, as it includes options to provide rss feeds and code to insert your content into your own site or blog. Very easy to use as well.
Just go to www.furl.net for the details.
...thanks Russ, I've only just begun to check it out and it does look like a very valuable tool.