I took two of my favorite bookmarklets (for del.icio.us and Yahoo MyWeb 2, put them in my javascript collider to get a Combo Tag Tool (drag this to your browser's bookmark bar.

By clicking on this bookmarklet you get the del.icio.us tag interface populated with the title. You also get a MyWeb entry pop-up window.

I have been seeing the early benefits of Yahoo's MyWeb, but I also want to keep the community I have in del.icio.us. Keeping both up to date and in sync is my goal and hopefully this will help you do the same.