I have been using Microsoft AntiSpyware for a month now and am very impressed with this program. It is actually a Giant program that Microsoft bought and tweaked. I ran Adaware & Spybot before downloading this program and they found nothing. Immediately after running the Microsoft program, it found 2 pieces of spyware. It has so many features they are too numerous to mention. I have found it to be a stable program that does more than most antispyware programs and have found no problems with it. I suspect this will not stay a free program. Does Microsoft ever give stuff away? I hope it will but am doubtful. If I remember correctly we will know after the beta testing is over in July.