upcoming v9 features?

User123 wrote: FWIW, I've got many sites that use "id=" parameters that are indexed by Google without problems.

You are lucky then.  On my sites, I have noticed that something with articleid= will get indexed but if it has id= by itself, it will not.

Also, Google specifically says (or said) it will not index pages with id= as a parameter (note that articleid= or itemid= is not the same as id=).

Example:
http://www.example.com/page.asp?id=1
Google won't pick up these pages in my experience.

Example:
http://www.example.com/page.asp?articleid=1
Google will pick up this page though.

I'm not sure what your trick is, but I never got Google to index any of my pages with id= in it, even though it indexes the rest of the site well.

Also, Google may have changed that.  I can't find the reference on their website that said it.  It used to be their somewhere under webmaster guidelines.  It seems they have rewritten a lot of their pages, including the webmaster guidelines since I last visited.