In terms of funniest person, I will forgo nominating myself, as I am probably not THE funniest person about here, but neither can I bring myself to single out any one person for that honour. There are a lot of consistent contributers, but it does come down to what you find funny.
That being a matter of personal taste, one does go for the more subtle humour, malversations and word plays rather than take joy in tedious teenage titilations, those tantamount to Torquemedan terror in their tiresome way. The best humour is that which is set up for the big punchline or when someone sets themselves up and the witty retort comes out at just the right moment, like a huge basketball SWAT!
As for the spammiest, apart from the obvious selfconfessed contenders, my

gos to scorch. How do you get away with consistently posting one liners that mainly consist of ****, ****** and ************
And thank you for your kind endorsement duke of york. For that, I will spare you and your city when I next visit olde Englande for the Dental Priests conference(I travel with Cardinal Fang

)