In the future, please don't just spout out shit you heard from a friend of a friend or whatever. Any arguement that begins with "i heard" not only doesn't hold any value, but it will often make you look like an idiot. If you're going to tell me that ecstasy puts holes in my brain, please link a recent(past 5 years or so), credible medical study done on the effects of ecstacy on the brain. If you are going to tell me that it is common to buy pills that contain herion, cocaine, mescaline in them, please link a pill testing site that shows the contents of AT LEAST ONE PILL that contains any of those drugs. Now i'm not going to argue with you that there is meth in some pills, not all, but some. buying a simple pill tester(about $20-50 depending on what kind) will go a long way in preventing accidental/unwanted ingestion on meth. And no, you will not become a tweaking meth addict because of the amount of meth in a pill.
As already said, erowid.org is a great source for this topic. Some other good sites on the topic:
www.bluelight.nu
www.pillreports.com
http://www.enlighten.org.au/aboutus.php
http://www.ecstasydata.org/