re: What were her motives to lie??
I could point out if the contents of the memos is true then she had reason to dislike Bush and not think him fit for office.
But disliking someone is not a particularly strong reason to lie.
Whereas obsessive hatred as the Swift boaters show for Kerry is in fact reason to lie.
Anyway she freely admit her dislike of Bush. She isn't out there making videos about this stuff nor is she on any moveon.org stuff.
BTW your logic leads to...Swift boater are all liars?
