Well it's on the front page, so it can't be that bad. ;)

I'll give you a real quick review:

Cheatsheet looks good. You have the standard mid setup and all your items are appropriate for Ziggs. I feel like Ziggs players generally max W second now for the turret pressure but I don't play the champion enough to say for certain. Actually I don't see anything about the skill order at all, so unless I missed it, that's probably something to add.

Layout-wise the guide is well organized and well-presented. Graphics and tables are all appropriate and not distracting. If there's one criticism I have here, it's that your gameplay section could use some screenshots, gifs or videos to break up the text a bit more. Admittedly, I should do the same for my guides as well. :P

Matchups section looks nice, though obviously you could use some expansion there as you only have two matchups currently. I'd recommend Cleanse against Veigar to be able to escape the cage if you don't have Flash. Ignite against Karthus also seems rather pointless as you can kill him or force him out of lane without it. Better to run a defensive summoner.

Overall pretty solid stuff but you have plenty of room for additions and improvement as well.