| reflective marketing | Noun phrase. The practice of using multiple or alternative channels to draw in traffic or customers; specifically applied to non-search channels (such as social media and links on other Websites) from an SEO perspective. |
| macro opacity | Noun phrase. The measurement of group-level opacity (q.v.). |
| core updates | Core Updates (or ?Broad Core Updates) are Google algorithm updates which are more significant than other smaller incremental updates. Google says Core Updates should be more ?noticeable, and made only ?several times a year. Core Updates should usually be announced by Google via communication channels such as Twitter or the Official Webmaster Central blog. |
| hits | Hits are visitors to a website. A successful campaign could be said to be one which delivered a lot of hits. Hits are not necessarily specific to a particular platform, they could be search engine visits, PPC, social media, or from people clicking a link on another website. |
| panda update | Google updated its algorithm in 2011 to include a search filter designed to stop websites with poor quality content from making their way into its top search results. This update was called Panda. |
