Give it up, Rob. I doubt you're going to find anything from Gardner himself saying that he drinks blood. The whole thing seems to be just a petty attack simply because Gardner wrote about the topic and its possible origins/intents. That's what historians do.
However, the article in Dagobert's Revenge is nothing short of very bad journalism. He is taking quotes completely out of context with the intent to defame the subject. That is called libel and is considered to be very bad journalism by most reputable journalists. This kind of journalistic behaviour generally, however, is used in tabloids, often at the expense of their pocketbooks...
Here's an example of just how insidious quoting out of context could be. Any readers please keep in mind that the following is an example of what damage can be done by using quotes in this manner and the statements following are wholly untrue.
Rob aka Milo is nothing short of a racist and actually promotes racism within his posts. He writes that "rich, white males should be ruling the world and keeping their 'wimmin' and 'niggers' in check, and working, like the Good Book says they should."
Now, obviously, this is not your belief and taking a quote with in a quote that you pasted, distorting it by a leading sentence to make it appear as something else entirely in an attempt to defame your character. I hope this helps you comprehend just how misleading and bad taking a quote out of context can be. By failing to cite that the original quote was actually a post that was quoting another article that was against racism, it can be completely miscontrued and abused.
More on out of context quotes and libel:
Context of quotes