LinkCounts Glossary

Entry
An entry is a single item (also referred to as a "story") that has been published in a feed. An entry may or may not contain OutLinks.
LinkCounts
Our linkcounts statistics reflect the number of links that we have observed in the entries published. We break these down by In-Link and Out-Link. There are several things that affect the numbers that we report:
  • Depending on the feed, we may or may not see all links. Some feeds do not include the entire article.
  • We do perform some filtering to remove references to things like XML namespaces and tracking gifs.
  • We recently made some modifications that allow us to track individual LiveJournal sites instead of having all of the LiveJournal sites rolled into one number.
Site
We use the term "site" to represent an individual blog or web site. Often times we will use the presence of a feed as an indicator that something should be treated as a distinct site. We treat treat subdomains as distinct sites, so http://site1.example.com is distinct from http://www.example.com. Sites may have multiple Sources
Source
A data feed from a site. Typically these are either Atom feeds, RSS feeds, or pings. It is possible and quite common for a site to have multiple sources.
Active Site
A Site for which we have been able to successfully process at least one Entry. An Active Site has one or more Active Sources.
Active Source
A Source from which we have been able to successfully process at least one Entry.
Link
We use this term to represent a URL. A URL could point to almost anything-- a feed, an image, an anchor, a namespace, et cetera.
InLinks
An InLink is defined to be a link that points to the measured site. Sometimes also referred to as an InBound Link. A site can have InLinks regardless of whether it has a feed of its own.
OutLinks
An OutLink is defined to be a link that originates from the measured site. Sometimes also referred to as an OutBound Link. A site cannot have OutLinks if it doesn't have a feed or its feed is not read by PubSub.
Total Links
The number of links that we saw after filtering the raw data (see definition for LinkCounts, above)
Filtering
We currently have a small number of filters active when we compute statistics. These filters remove things like namespace references, tracking gifs and logos.