| tf-idf | (Term frequency-inverse document frequency) A measurement used by Google to determine how important a keyword is on a webpage by comparing its frequency and usage on other webpages. |
| drip marketing | Drip marketing sends collections of messages that are pre-written to their prospects or customers over a certain period of time. It is often used in email marketing. |
| spam | Noun. In general use, any form of high-repetition marketing practice that annoys people, uses resources in unethical fashion, or otherwise violates the guidelines and/or laws of various Web services or governments. Cf. Web spam, Spam bomb, SpamAd Page, Spamversibot, Crawl Spam, et. al. |
| search engine results page | (SERP) A page of results after searching for something in a search engine. If someone refers to their website appearing on page 3 of the SERPs, they are talking about appearing on the third page of results for a specific keyword. |
| pbn | Stands for Private Blog Network. |
