How do you retain PR on a dropped domain?
 

Any particular methods that work?

You usually don't. Google kills it.

you dont, drop it and move on. Unless you mail google to unban you but i would suggest you dont do anything until they unban you or your wasting your time.

YARGH! if you mean a domain that be expired? Just register it, as long as links stay the same, and ye be keepin' a similar page there, PR shouldn't be sinking a bit.

If you need to see what a page be looking like before, check googles cache, or ye be tryin' the wayback machine.

This method actually works?

nope

.......

what is the use of dropped domains from google then?

you crack me up chio

you need to add the googlePriorityID as soon as possible

Nope (but yeah it does, sometimes)

For obvious reasons... From what I hear, catching a dropped domain with the backlinks retained is a crapshoot.

Some will have it retained, others won't.