How Google Adsense,Gmail,Blogger Gets Banned

How google adsense detects that the clicks are made from same computer?
Do they check ip addresses ?
If someone has a dynamic WAN-IP and a static LAN-IP then how can it detect ?
If in any case the clicks are legal but are from same city/state and also from similar IPs then would they ban the blog ?

Top 5 Best Alternatives to Google Adsense

Does Google Adsense has banned your account ?
Do you still want money to be earned by your blog/website?
Then here is the list of my very own trusted websites which are best competitors to the Google Adsense .Abrite is presently serving the best possible publishing network to banned Adsense users. They have many programs such as ads for content , ads for inline content , ads for the image display . They high click through rate. Even the publisher can set its own ad rates. Best advertising service which alternates Adsense.
Bidvertiser has the best click through program. They pay you through Paypal and through check.Their minimum payout is $10. You will be paid on the every click your ads have.You will always be having the highest bidder for your contentful website.
Clicksor is another good advertising service which has a revenue sharing program of 70/30 , you will get 70% of the money your ads will make and the rest 30% will go to the Clicksor. They will pay you when you have $20. Their payment is done through Paypal. They have various programs such as : banner ads,flash ads, image ads etc...
Chitika is fastest growing website for advertisers and publishers. They pay when some one clicks on the advertisers ads. They pay through paypal and even check. They are been now most widely used by the publishers.
Kontera is one of the worlds fastest growing ad network , which works for the inline content serving ads. I personally use it very much in my blog and website. They pay through paypal , check etc . Their minimum payout is $50.
Some of the other best ad networks are :
AdToll
Claxon
FastClick etc....

GET YOUR ADSENSE APPROVED QUICKLY

FIRST OF ALL MAKE A BLOGGER OR WORDPRESS,USE ONLY GMAIL ACCOUNT,NOW GO TO GOARTICLES.COM AND EZINARTICLES ,FROM THAT IT IS LEGAL TO COPY PASTE ARTICLE,
POST 50 GOOD ARTICLES,

NOW GO TO WEBMASTER TOOLS AND ADD YOUR SITE,OR ALSO ADD ALEXA CODE IN UR SITE,
AND UR WEBSITE LOOK AND THEME SHOULD BE NICE,
THEN APPLY FOR ADSENSE,I GUARANTEE IF U ARE HONEST,U WILL BE VERIFIED AS ADSENSE BABY IN 4 DAYS.
YOUR ADSENSE WILL THEN APPROVED QUICKLY.