3Dnow is a failure and is getting kicked to the curb
3DNow! is not a failiure. MS DirectX 6 and above contain code optimised for it, and so do the GeForce and Voodoo gfx drivers. By incorperating the instructions into the api's, the individual packages don't need to do it themselves. The same is true of SSE, so they're both good.
The P3 does perform slightly faster in 3D games, but considering you can get Athlons much cheaper, the equivilent Athlon at the same price will outperform a P3 in everything.
No-one has optimised for SSE2 yet (I think) although ppl will soon (ok, FlasK is), and it remains to be seen how good it really is. It's not an issue when comparing P3's and Athlons though, cos niether have it.
What makes AMD users so stupid is that they invest money in a company that thrives off making a product that is a copy of another
What about support for DDR memory? I'm sure Intel will be very interested in copying this very shortly. The Hammer will be the first 64bit mainstream processor (I don't count Alpha, IA-64 or G4 as mainstream, sorry).
What about PowerNow! That's much better than a "a-600MHz-mobile-P3-which-actually-runs-at-300MHz-when-mobile" Intel solution. What about Duron? A budget processor that actually performs, and isn't just another processor with bits lopped off (i.e. original Celeron had no L2, current Celeron has 66MHz less bus speed).
I really think you ought to write from an informed viewpoint (yawn).