REQ :HD Trackers

I am kindly requesting anyone to invite me to a good HD trackers,i want torrent sites that have demonstration discs of LCD and LED producing companies like Sony ,Samsung etc,,
I am also intrested in some good hd content.
Any help would be really appreciated:yup::yup:

Are you interested in Hdbits.org ?

http://hd-torrents.org/donate3.php

donate and then register, or:

http://acehd.net/signup.php
http://www.hdcity.org/signup.php
http://www.thdbits.org/signup.php

thanks for the links