Quote Originally Posted by staff@PTN
Recently we have made some changes to our PTN rules as follows:
*We prefer unrared content over rared content, but both are allowed. If an unrared torrent dupes a rared torrent, the rared torrent probable will be deleted. All packs have to be unrared.
*All rips from low quality sources (CAM, TS, TC, DVDScr, Screener, R5 etc) are removed from site when a better quality source is out (DVDRip, BDRip, 720p, 1080p etc).
*BDRips will trump BRRips and the BRRip will be deleted. If a BDRip is on site please don't upload a BRRip.

For more read RULES

You can talk about this here
That's good that they're taking steps towards quality control