I use a Panasonic SDR-S26. It's not HD. I bought it just as HD video cameras were becoming common and could not afford one at the time. It does fine for You Tube as far as I am concerned.

I also use editing software, Open Shot<.a> (a Linux only editor) in my case, for the same reasons as Anahata, or at least for the first two reasons as my camera produces much smaller files than a HD camera.

I used to use an editor called Kino, but I've had problems with that since I changed from Ubuntu to Linux Mint - it only plays back at high speed for some reason. I still use Kino for creating animated stills, though as it has a better zoom and pan feature than Open Shot.