the difference between Technorati Tags and Del.icio.us and PubSub and google.
Written on the original Movable Type site and recovered from the Internet Archive.
So alot of people are trying to put a meta layer on top of the web and blogs and other types of data. Technorati with Tags is trying to aggregate blog entries, Flickr photos and del.icio.us entries. Technorati watchlists only search for the keyword you want in blog postings (just like typing in biodiesel on their search box). Del.icio.us serves up web and blog matches in reverse chronological order (and will automatically generate an RSS feed that matches). Del.icio.us only gives you bookmarks that its members have tabbed, they don’t do any crawling. Then PubSub gets all the pings and does keyword searching much like Technorati (although the results are different yet again). Google takes web sites and blog entries (no flickr) and applies their page rank to the results.
Technorati Biodiesel Keyword search
So, which do I like better? Well it depends on what I am looking for. If I wanted a javascript sidebar that shows me the latest news/posts about biodiesel, I would stick with Technorati or PubSub since they do a better time with the real time posts. If I were looking for a good list of general biodiesel resources, especially the most authoritative SITES, I would use Google or maybe del.isio.us. Would be nice if I could take any or all of these lists and have them auto javascript sidebared for me. That would be a cool service.