Why? Mainly because Fraps tanks your FPS when playing a game while recording.
Start using [url=http://dxtory.com/v2-home-en.html]Dxtory[/url].
IMO this really is better than Fraps and does NOT tank your FPS. Now...Dxtory does not record aero desktop footage (at least not that I know of). So for that...stick with Fraps.
The reason why I made this thread is because to my knowledge, Dxtory isn't all too well known...and it really should be. So I hope you all download it and try it out.