http://www.stark-labs.com/phdguiding.html
"And the winner is...
2008: PHD Guiding - Reader’s Choice Gear of the Year for 2008 on Cloudy Nights
2007: The results are in from the 2007 AstroPhoto Insight survey run by SkyInsight and in the category of Guiding Software, there was a stand-out winner - PHD Guiding. Out of over 700 votes, PHD Guiding came in #1, beating the second most popular piece of software, the de facto standard Maxim DL, by over 50%. In fact, it did better than ACP, Astro IIDC, Equinox, Guide Dog, GuideMaster, K3CCDTools, Maxim Essentials, Maxim DSLR, and Meade Envisage... combined! I knew many people used PHD Guiding, but to say I was stunned at these results is an understatement on a grand scale. I wrote PHD Guiding to take the hassle out of accurate autoguiding and I give it away free as a way to help pay back the amateur community I've gotten so much from. With results like these, it's clear PHD Guiding has helped a lot of amateurs enjoy the hobby more and take better shots. Thank you all for helping make PHD Guiding what it is today. "