I must throw in my bits for the tool tips as well. I use iGoogle as my home page and all the RSS feeds are showing double tool tips. The one that pops up as part of the add-on and the 'normal' one. The one in this add-on strings along across the screen with no line breaks, and it's virtually unreadable. These RSS feeds have their little blurb as tool tips, so they are long. Also, the tool tip that pops up as part of the add-on, doesn't seem to go way.
I'm going to go back the previous version until this is fixed. Until then, I'm giving this a two star, because as it is now, this is un-useable.