| trust flow | TrustFlow is a metric from Majestic SEO that measures how trustworthy a website is. |
| web spam | Noun phrase. Any content that violates search engine guidelines, usually created for the purpose of attracting search engine referral traffic unfairly or to help promote other Web spam for the purpose of attracting search engine referral traffic. Cf. spam. |
| meta keywords tag | A list of the keywords you consider important for that page. No longer taken into consideration by search engines and best not used at all. |
| link velocity | How quickly (or slowly) a website accumulates links. A sudden increase in link velocity could potentially be a sign of spamming, or could be due to viral marketing or doing something newsworthy (either intentionally or unintentionally). |
| topical authority | Topical authority refers to the expertise of a website on an entire topic. Instead of targeting a bunch of keywords, think of covering topics that relate to your main industry. For example, if you have a marketing blog, you could talk about SEO, PPC, Content and many other related topics. Topical authority has been linked to better rankings overall. |
