| manual review | A website review done by a search engine engineer to determine whether a site is legitimate. Most search engines utilize a combination of manual and automated processes. |
| short tail keywords | Search phrases that consist of only one word that are less specific to a searchers context and intent when entering a query. |
| alt tags | HTML code that enables you to tell the search engines what words to associate with an image. |
| hreflang tag | The hreflang attributes can be used to ensure the correct language and regional websites are served in search results. The Hreflang specification can be applied using the rel=alternate and hreflang=x attributes with the applicable language code inside a link element, via a HTTP header or a sitemap. Read our guide to the Hreflang specification here. |
| 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). |
