Design - 9/10

Simple is nice, and xkcd is straight forward. You see the comics strip without having to scroll, except for some of the 4 panel strips. Everything is hand drawn and it gives the comic a unique style of awesome.

Comedy - 10/10 

As the site describes itself xkcd is, "A webcomic of romance, sarcasm, math, and language". Every strip is funny and I can spend a good while surfing through the random button. My favorites are the episodic comics. If this isn't your first trip on the Internet then you will get these jokes right off.

Overall: 10/10