Rated 5 out of 5 stars
Tooltip Plus is a great little add-on that does what it says... and thanks to it and Fission, I have eliminated my status bar and freed up some much needed screen space (I hide my menu bar too, which can be shown again by pressing ALT).
It appears that favicons aren't showing up, although this isn't a problem for me because I would/did disable the option to show favicons and document icons.
And it's a Pity Tooltip Plus doesn't show the cleaned link that Redirect Remover displays in the status bar when hovering a cleaned link (it comes up as RDR: and the cleaned link). Install Redirect Remover and you'll know what I'm on about.
All in all Tooltip Plus delivers but could probably do with an update to accommodate the issues brought up by myself and others.