Since Russovich is a recognized expert in the field...and some consider him and his computer knowledge the "industry standard"...I figure he knows what he's talking about.
I've never used a registry cleaner...Win95, 98, 98SE, XP Home, XP Pro and now Vista...and I've never encountered a peformance problem that could be in any way traced to "registry bloat." (I did do an annual reformat/reinstall of 95 and 98, though...backintheday when I thought that was fun!)
I have, on the other hand, made some money fixing systems on which various registry cleaners have been used.
