(January 28, 2010 at 4:16 pm)Rhizomorph13 Wrote: Argumentum ad ignorantiam.
The argument from ignorance,[1] also known as argumentum ad ignorantiam ("appeal to ignorance"[1][2]), argument by lack of imagination[citation needed], or negative evidence,[1] is a logical fallacy in which it is claimed that a premise is true only because it has not been proven false, or is false only because it has not been proven true. - wikipedia
I'm not sure who you were talking to since neither fall under this. From what I have gathered from fr0d0's responses, he does not believe in god only because it has not been proven false, he believes in god for more than one reason and theVOID does not believe in god only because it has not been proven true.