Ready Boost is a useful way of speeding up your laptop/computer if you have Vista. Take a memory card of 256mb+ and put it in the memory slot and an option will appear to use ready boost, 4GB is the maximum and a certain speed is required so Vista will tell you whether or not it will be acceptable to use on Ready Boost. What it does is use the memory card as temporary memory and speeds the said computer/laptop up quite a lot.
Anyway you can find out plenty about Ready Boost anywhere else on the net, this review is about Ready Boost Monitor, Ready Boost Monitor is a simple tray application that can be downloaded on download.com, it was created by URG systems and is especially useful for monitoring whether the card is doing its job, whilst this can be done without it - it takes quite a bit of clicking here and there where as this simple tray application is just one click away.
It's rather easy on some laptops (in particular) to eject the memory card without noticing and this is where this one comes in handy.