contentEditable in Mozilla
ContentEditable for Mozilla is a hot topic at the moment. The main focus of the debate is this bug on Bugzilla, which gets pretty heated. Blogzilla has a good explanation of the principles behind the disagreement, while Scott Andrew makes an excellent case for copying IE’s implementation:
To my knowledge, no W3 working group is discussing how to implement editable content directly in a Web page, so the question remains: do we follow IE’s de facto standard, or wait for a standards body to hammer out one?