So between my experience with this blanket, and my other wool gear, here is what I've leaned.
1, Gentle cycle: if you don't trust your washer, or if the item is big, hand wash. soaking is better than beating it to death, so take the time and do it right
2, Not too much soap: A little goes a long way, ideally just enough to cut the surface tension of the water if there is no real dirt, and if there is lots, a good brush beforehand will help.
3, Rinse well: less soap helps here.
4, Cool water: My research tells me that heat and agitation cause the shrinkage in wool that is not "de-scaled" so I'd just use it as a general rule for all. Also excessive soap, may add a slip factor which will also cause some shrinkage
5, no Enzymes: Enzymes break down protein, wool is protein, therefore, enzyme detergent is BAD
6, Wool is tough. Look after it and it will last a long time, but don't be scared of it. Dry cleaning is hardly necessary. I learned that from accidentally washing a pair of worsted wool suit pants. won't do it again (spent a fair bit on that suit) but I know now, that I can hand wash the pants, and spot wash the jacket just fine.
7, Air is your friend: airing out wool solves all kinds of problems, just keep the bugs off. Eucalyptus, Ceder, Tea Tree oil, and other stuff like that can keep the bugs away, and you don't even need to apply it directly if you don't want to.
I hope this helps guys,
these are general guidlines, I know some others have posted great info on the care of specific items like hudson bay blankets and the like.
Stay sharp and warm!