Not ALL "Prophets" that come in the last days are "false" Prophets, read...

It seems that a lot of people on these threads automatically want to judge someone as a "false" prophet that says he or she has had visions and/or dreams of things to come. Yes, the Bible does say that a lot of "false" prophet's will come, however, that does not mean all will be "false". We need to read ACTS 17-21, which i have included below. however then the question remains how do we know who is for real and who is not?
Acts 2:17-21 
17And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams:

   18And on my servants and on my handmaidens I will pour out in those days of my Spirit; and they shall prophesy:

   19And I will shew wonders in heaven above, and signs in the earth beneath; blood, and fire, and vapour of smoke:

   20The sun shall be turned into darkness, and the moon into blood, before the great and notable day of the Lord come:

   21And it shall come to pass, that whosoever shall call on the name of the Lord shall be saved.

[edit on 10-6-2005 by humbled_one]