It's too bad this can't be fixed. I'm experiencing the same problem as the original poster.
I'm trying to obtain support for the WPF grid. Try running a search on some grid related topic like "scrollbar colors" or "header colors" for example. A good fraction of the results are for the WinForms grid with a few WPF-related results sprinkled throughout. The user is forced to weed through all of the WinForms-related stuff to ferret out the WPF-related posts that are worth viewing. Such is the nature of searching but the problem could be resolved so easily if "forum" were one of the search criteria.
David (a different David, not the original poster)