When it comes to prophecy one has to be certain that they are hearing from God...A lot of the time self gets in the way....So along with fighting self you must be able to discern that it is not Satan putting his thoughts and words into the prophecy....Even if it sounds like the Word of God it must line up 100 % to the Word otherwise it is not from God....A prophet must be in the Word of God constantly and not rely on what they read months/weeks ago for the devil/self can twist the words around....If the prophecy caters to the flesh one knows immediately it is not from God...If the prophecy is full of warnings but there is not a path out then that is not from God...If the prophecy does not contain the character of God, then it is not from God....We are to test all things and that includes prophecy....A prophet is also to be tested by other prophets....As to internet prophecy, one is not on a personal level with the prophet and the prophet could have a life of sin and those on the internet would not know....
I have meet true prophets of God and also prophets of deception...

Blessings....................