Categories in different domains

Hi;

Is it possible to show wordpress categories under different domain names?

category 1 -> http://www.domain1.com

category 2 -> http://www.domain2.com

…

Since here it is stated that WP 3.0 won’t have multi-domain support;

http://wordpress.org/support/topic/345127/page/7?replies=186

“merge with MU (but not the extra domain stuff, which will remain plugin territory for this version)”

… I’d like to find out what plugin do I need to do this.