Some deathtouch questions

[BlackJester]

Wait wait wait, so a 1/1 infect death touch can kill a 9/9 indistructable?  Am I reading that right?

No. Deathtouch means that 1 point of damage is considered "lethal" when it comes time to assign.

[BlackJester]

So, if you had a 3/3 with Deathtouch blocked by four creatures, you only need to assign one point to each blocker before moving on to the next one.  This is regardless of size or indestructibility.