Google Webmaster Tools is a popular, free SEO-tool. The direct tie-in with Google provides valuable data that can’t be found elsewhere.
The C-Block is the 3rd part of an IP-address. The more C-blocks refer to a website, the higher its SEO authority.
Redirecting a webpage basically means that the URL from one page, points to another. The initial page never loads. The webpage listed in the redirect is loaded instead.
Linkbuilding is part of SEO authority building and allows websites to gain higher rankings in the search engine results pages (SERPs).
Quality Score provides CPC discounts, higher rankings, and more impressions and clicks in AdWords campaigns.