In other words, your keyword pointing your site/blog from a quality website is a linkbuilding technique. You will be kicked by google if you buy links or spoof google, you will be kicked out of the google serp. Once done..all your natural links will also be under survillence by google.
link building is a technique of making backlinks of your site.If you use link building and keep in mind all the guide lines of Google then your site will not be penalize.Make the quality backlinks,read all the updates and follow them...:)
Google make an update having the name of penguin in whcih google remove the value of all the links which is generated by link building.Now we have to go only for quality backlinks to get the best result.
The penguin update is responsible for sites getting penealized for link building. The hard fact of the matter is that link building strategies that worked for many years are now knocking sites out of their position on the engines. I suggest that you read a few quality articles on the update and decide on a new stategy. If you are in a real bind you may want to hire an SEO expert. But, for the most part many can recover their rank by implementing new tactics and making sure old habits for link building get tossed.
Link building means collecting quality backlinks with the off-page optimization SEO techniques. If you are using unethicals ways of promotion like black hat SEO techniques & spam methods then you will be banned from the search engines
link building is penalizing site, if you are not doing link building according to penguin and panda updates, in certain time so many updation has been made by search engine. so we should try to work high quality websites.