I have been thinking about this lately, and what really got me thinking was another related post, about how malfoy said something about Hagrid messing around with stuff that was to "big" for him. It seems that Draco has had alot of "inside" information.
Draco is informed of this, and notices that "suffles" is with Harry boarding the train to Hogwarts. So I thought, so what? What does it mean. Well it would have to mean this:
Draco nows that Snuffles didn't betray Harry's parents, it was someone else. Thus he would know who it was(wormtail). So his father trusts him with this knowledge, but also trusts to send his son to hogwarts. Lucious is a known Death Eater now, because he is in prison. with all dracos knowledge, he must be all but sworn into being a death eater, if he isnt one already. Will that change now that his father is in prison? Well he seemed fairly ticked with harry after his dad is busted;so i doubt he will work for the order.
I apoligize if this has already been posted before.
"Not everything that can be counted counts, and not everything that counts can be counted."
- Albert Einstein (1879-1955)