I just down loaded and looked at the changes of Tags 2 beta. Here is the change they made is to rely on spotlight comments , copy existing OM tags to spotlight comments. Tags 2 will continue to store a (copy) of the tags into extended attributes but will rely on the tags that are stored in Spotlight comments . They give reasons of new speeds of Spotlight in OS X 10.6, changes the way SL uses xtndedatt and some applications that didn’t work will with OM.
I think this was the solution origninally made by Michael in longwided debate on OM.
Questions :Will EF go the same route ?
Is OM unravelling before becoming a defacto standard ?
(Tags now only searches spotlight comment tags, although it writes to spotlight comments and xtndedattributes !!) So it will not find EF tags !!!) which was irritating !!