Dustin Luther, the real estate Blogfather, summed it up well in his December 2005 post, “ Linkation Linkation Linkation ”.
“ Linking to other sites is critical to building up your site’s credibility with other bloggers. Join in some of the wonderful conversations that makes up the web and you’ll likely find that more and more people begin to link to your site. Find a blog you really like and then write articles about their articles! Link back to them and you’ll be surprised how quickly they start linking back to you! It’s actually a lot of fun to be part of this process.”
A hyperlink, more commonly called a link, is an electronic connection between one web page to either (1) other web pages on the same web site, (2) web pages located on another web site, or (3) to another part of the same page.
Three basic types of links:
Inbound / Backlinks: Links from other sites pointing to your site
Outbound: Links on your site pointing to other sites
Internal: Links on your site pointing to another place on your site
Link building: The process of getting quality web sites to link to your web site, in order to improve search engine rankings.
Anchor text: The words in a hyperlink. The text usually gives visitors or search engines important information on what the page being linked to is about.
Reciprocal / 2 - way link: “I’ll link to you if you link to me”.
3, 4, 5-way links: Linking schemes designed to fool search engines. Hint: some really smart people work at Google.
Link farm: Sites/pages with dozen of links. Built for the sole purpose of increasing search results. Often has opposite effect. Bad. Spam. Avoid.
Link bait: Any content or feature within a website that somehow baits viewers to place links to it from other websites. Lauded or applauded depending on who you talk to and how it is done.
Link Popularity: A raw count of how "popular" a page is based on the number of backlinks/inbound links it has. It does not factor in link context or link quality, which are also important elements in how search engines make use of links to impact rankings.
Deep Links: Links to internal pages (not your home page). Good stuff. One reason blogs tend to do better in search engines than static sites.
SERPs: Search Engine Results Page. What is returned in a search. Where you rank for a search term
Some definitions from Anvil Media’s Glossary
Why I Focus on Google (actual search engine referrals to TPREG this year)