ReadyBoost - Does anyone use it?

Vista went RTM a little more than a year ago and one of the features that was touted by Microsoft as innovative and a real reason to upgrade to Vista was ReadyBoost.  In case you've forgotten, ReadyBoost is a disk caching feature that can increase Vista's performance by using flash memory as a high-speed cache.

I remember being quite enthusiastic about ReadyBoost during the run up to RTM, but I have to admit that I can count the number of times that I've actually used it on the fingers of one hand.  I can see it being useful for notebooks or systems which are close to the bottom of the Vista RAM requirement, but to be honest I've found it a better to just add more RAM than have a USB stick poking out the side of a notebook - not only is that inconvenient but it puts the USB drive and the USB port in a vulnerable position.  I've got dozens of USB flash drives that'll work as ReadyBoost caches too, but I still prefer to keep data on them.  I'd imagine that each system would be bristling with USB sticks, but alas that hasn't turned out to be the case.

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Odd how technology can seem really useful but then you find yourself not really using it.