I just wanted to bump this up to the top and mention that I recently sent out an email to all of my clients with a short list of my top five free software programs and online resources - they all loved this one and most had never heard of it.
Sending free resources that you use yourself along to your clients is a great way to add value to your position with them as a VA, it takes only a minute or so to do this every once in a while *and* makes them happy (always a good thing

)