I'm no fan of Redmond's product, what makes it even worse unfortunately over 50% people in The Net use it.
Said that, it is unfortunately essential for website solution to work in IE. JoGadgets is a very nice tool but some of its important parts don't work in IE.
This is:
- accordion gadget,
- content box,
- Candy gallery (when attempting to display image opens only image file in current window )
- playlist, audio player
- infobox
Some of 'gadgets' do work, so as long as you don't want to use listed it is still cool thing to have.
Hopefully developer will pick up his work again (it has been over half a year since last release)

Powerful component which really makes world better place, especially for translators and users of Joomla!
Realiable, quick support, developement keepinng up with core recently frequent API changes. Ifan is probably a machine :)