Triple draw has been around for years, falling in and out of favor. There have been a few threads on 2+2 and RGP over the years. About a year ago, Jim Geary wrote a couple of beautiful posts about pot limit triple draw 2-7 on this forum. Check them out in the archives. He may have put them on his web site:
http://www.jimgeary.com
Go to his poker page and check out the letters on poker.
It's a great game. I hope nobody writes a book about it.