Why is it bad idea from SEO perspective to host free articles and write ups that are very common on the internet?

How often should a blog be updated for the best SEO results?

Long-tail keywords are:

How often a keyword is mentioned relatively to the space on a page is called:

Flash Ads, by default, have a higher Quality Score than Static Ads.

How can one site 'recommend' another in the eyes of Google?

Which is the two formats for the Skyscraper type of advertisements?

According to the Google AdSense Program Policies, which of the following type of sites are barred from displaying the Adwords ads or the Google search box?

One view or display of an online Advertisement is called a:

If you have more than one Google Adsense ad unit on each page of your website, will it get you banned from the program?

_________________ use both crawlers and directories to generate relevant results.