I use it, Tech Support is good. It needs you to get into the guts of your database to do the occasional manual tweaking (such as when the databases get corrupted), but ask the software author and he'll sort you out !

I use it for Poser Artist (= P4) and now P6. It helped me find the references (which PDOExplorer will also do), but it can also tell you if you've got files (such as texture files) which are no longer used by any of your poser-type files, and you can remove those, save hard disk space.

I find it useful.

Eternal Hobbyist