I'll agree with knighty's statement above. FP can be a useful tool if your preferences are set up correctly and you understand html. Unfortunately, it does produce invalid proprietary code if you use the shortcut features that it provides such as themes or shared borders and all the other junk that is there for the new user to experiment with.
I've been using it since FP97 and won't use anything else just yet. I'm using FP2000 now and have been right after its official release. I won't upgrade to FP2002 until the bugs have been worked out.
View the site in my profile and you'll see what FP is capable of. Its not a graphical site, but I manage over 20 other sites that have all been built in FP and function almost trouble free across most browser platforms. The Mac has been an issue but I've managed to figure out what code FP generates that is not 100% compatible.
I purchased the Dreamweaver/Fireworks studio when it was at version 2.0 and found it to be a little too technical in some aspects, that was back then. Dreamweaver has its faults also and its just a matter of preference. FP in the wrong hands can wreak havoc. FP in the right hands can produce sites that are compliant and are pleasing to the eye. And on top of that, secure top positions in the search engines!