Performance of a USB ZIL for ZFS

[Joshua Isom]

I was wondering if anyone had tried using a decent USB flash drive for 
the ZIL.  I know it'd be hard finding one fast enough, but some from 
patriot seem like they might be suitable for home use.  Part of the idea 
is to just minimize hard drive thrashing and the wear and tear 
associated with it.  If it helps prevent the drives from going bad, and 
doesn't hurt performance too bad all the better.  But if it's going to 
hurt performance too much or not help prevent thrashing there isn't a point.