Kayako........

Well, for all ranked lists it would be by the system Flayed used for compiling the first Official HDC Top 100 - Your #1 ranked villain will get 5 points, #2 gets 4, #3 gets 3, #4 gets 2 and #5 gets 1 point. The villain with the highest points will lead the pack, then second highest...you get the gist.
If there is a tie in points, then the number of lists he/she figures in. If that's a tie too, then the ranks he/she holds in various lists.
And if we don't have 100 villains with at least 1 point, then I go through the remainder of the top listed ones and find the highest ranked ones in each of them.

For unranked and no-order lists, I am in the process of asking the sender to mention their Top 5 at least. Will make my job easier.

8 lists in already. 195 names in total, in all of them.

Very impressive. I like how you all are taking some time and coming up with really unique Top 5s (at least), instead of the common 80s slashers we all know as popular icons. :)

Great idea V! My list is in.

I love the nostalgia. My list will be in sometime soon.

Well, well...howdy stranger. How's Amazon treating you post-promotion? :)

Good to see you back around. Eagerly waiting for your list.

Thanks!! :)

Awesome, awesome idea. My list will take some work, but you will have it ASAP.

Should have mine either tonight or tomorrow.

I'll be in by the due date taking some time to think it out.