Some time ago, I explained why I felt that browser extensions such as as plugins and toolbars should be considered harmful. I also mentioned that some of the most advanced features of social bookmarking tools like Activeweave or Diigo only worked with browser extensions, even though I was convinced that they could have been implemented using AJAX only. Well, I sticked to my guns, and in the meantime the good folks at Diigo worked hard to make their cool website annotation tool available as a bookmarklet. Some of the most advanced features offered by Diigo remain available with the toolbar only, but it’s definitely a step in the right direction. Also, it’s quite encouraging to see user feedback being taken into account in such a diligent way. If you want a live demo and happen to be in the San Diego area later this week, make sure that you attend Diigo’s presentation at the O’Reilly Emerging Technology Conference. Many thanks to Maggie and the rest of the Diigo team for their great work!