I have just updated the Japanimusic in-browser search to support Opensearch 1.1 (Draft 3). While doing this I have also updated and extended the browser compatibility to support not only Firefox and IE 7, but Google Chrome, Safari (Mac) and Opera!
I have tested Firefox 3, IE 7, Google Chrome and Opera and can confirm they
work. However, I do not have a Mac so I cannot try the instructions myself. I used some other website's instructions and altered then to the new settings. Whoever has a Mac and has Safari, please try out the Safari instructions and please report back to see if it works or not (theoretically it should work)...
I would like to thank the following people:
GamBell - for the original idea and the first version
ftechz - for making the URL's shorter
Grapefruit2 - for making it work with Opera
Please post all suggestions/bugs here. Thanks and enjoy

Just another reason why Japanimusic ownz the intranets =)
PS: If you have any bugs or suggestions on the development of this add-on, or other add-ons you would like to see, please reply in this topic. Thank you!