It looks likely that Microsoft will be introducing a logo program for filesystem and registry filters.

One can argue about the value of these programs especially for specific applications.  Whilst it is easy to see the importance of logoing a full commodity offerign like an AV filter it seems harder to apply to specialist filters,

One war or another, if this program is announced it will be important to make your filters conformant.  Steading System Software have been workign with these tests for many years and are well placed to help you with this.