Marauder's Map + Invisibility Cloak = Disaster (once DD Gone)

[tinglinger]

No: HPFGUIDX 131713

Jamie
Luckily, the creators of the map were not dark wizards,
so although it's possible that through some mistake it's 
not foolproof, it won't wilfully trick anyone. I do also
wonder what use the map may have in future.

Tinglinger
The Marauder's Map has two properties that seem to have
been forgotten, since Jo has not mentioned them since
Harry first used the map in Chapter 10 POA.
(All references to Ch 10 POA 194-195 am ed)

First, the map can reveal passwords........
"Harry watched carefully. His little ink self appeared to 
be tapping the witch with his minute wand. Harry quickly
took out his real wand and tapped the statue. Nothing 
happened. He looked back at the map. The tiniest speech 
bubble had appeared next to his figure. The word inside 
said, "Dissendium.""
"Dissendium!" Harry whispered, tapping the stone witch
again.
At once the statue's hump opened wide enough to admit a
very thin person.

Hmmm .. quite useful to get around Hogwarts. And with an 
invisibility cloak, noone is the wiser......


Second, the map may actually influence it's user to get
on with their agenda...
(Emphasis added)
"Harry traced the secret passage to Honeydukes with his
finger.
Then, quite suddenly, AS THOUGH FOLLOWING ORDERS, he
rolled up the map, stuffed it inside his robes, and
hurried to the door of the classroom. 

So I wonder if the MM CAN willfully mislead others - or
more properly, not be concerned with the consequences of 
WHERE others are led by it's use....
Hmmm, how about Dumbledore's office? I wonder what might
have happened if Umbridge had the map and knew how to
use it?

And let us not forget that 1) Pettigrew, a known traitor, 
was one of the authors of the MM and knows how it works, 
and 2) Lupin, whose motives are not necessarily 100% pure
gave the map back to Harry at the end of POA, despite
knowing its powers.....

We have been told that Dumbledore had placed many
protections around Hogwarts so that an enemy would have a
hard time accessing the school. However, once he is gone, 
the MM and a few invisibility cloaks will leave Hogwarts
open to invasion by Voldemort and his supporters.........

We shall see......

tinglinger 
who though busy, will be posting more to potterplots in the
next two weeks before HBP
http://groups.yahoo.com/group/poterplots