Wordpress is undoubtedly one of the most SE friendly CMS for blogging. However, it may generate duplicate content and invite the most undesired Google ban. Here is a fantastic video in this regard.
http://www.wolf-howl.com/video/make-wordpress-search-engine-friendly/
Few months ago, i posted a topic here regarding how a site was banned for a mistake done out of oversight. Because of some sort of lathergy, i cared not to file formal a reinclusion request. Yesterday, to my surprise and delight, i found the site is back in Google index. Although most of its pages are in the supplemental result but the site: query returns the home page and couple of few other pages in the main index. It also shows up in the SERP, actually i came to know about it when i was analysing my web statistics.
Here is a link that draws my attention while browsing the net.
http://www.webmaster-headquarters.com/Spammers/
It also contains the Step-by-Step Guide to Getting A Spammer Banned from Google.
The big “G” is really active this time!
In my mailbox, i’got a newsletter containing this link:
You can check whether a website is banned or not using that link.
Goodluck!