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LAN
Short for Local Area Network or a computer network that spans a relatively small area. Most LANs are confined to a single building or group of buildings. However, one LAN can be connected to other LANs over any distance via telephone lines and radio waves. A system of LANs connected in this way is called a wide-area network (WAN).

Latent Semantic Indexing
A document indexing process, used by Search Engines, that records which keywords a document contains and examines the document collection as a whole to see if any other documents contain the same keywords. LSI considers documents that have many common words to be semantically close, and those with fewer in common to be semantically distant. When an LSI-indexed database is searched it looks for similitarity values it has calculated for every content word, and returns documents it thinks best fit the query. LSI does not require an "exact match" to return useful results because two documents may be semantically close even if they don't share a particulary keyword.

Leased-line
Refers to a phone line that is rented for exclusive 24-hour, 7 -days-a-week use from your location to another location. The highest speed data connections require a leased line.

Legacy Content
Legacy content is information to be moved from one format or system to another, e.g. from paper to web. Legacy content may include human resources manuals, contracts, product specifications, contact databases, etc.

The process of moving content into a new format (or design) is typically referred to as 'migrating/migration'.

Link
The text or graphic used in an HTML document to jump from one document to another. Typically underlined.

Linux
A free UNIX-like operating system developed by Linus Torvalds. Linux and FreeBSD are very often used by hosting companies as their operating systems.

Linux Hosting
Web hosting that supports Linux, an open source operating system that was derived from Unix.

Listserv
The most common kind of mail list, Listservs originated on BITNET but they are now common on the Internet.

Load Balancing
Distributing data across a network of servers in order to ensure that a single Web server does not get overloaded with work, thereby affecting performance.

Local Registry Fees
Most TLDs require initial registration fees as well as annual or bi-annual renewal fees. Prices vary from cost-free to thousands of dollars per domain depending on the TLD chosen as well as the registration organization chosen. Typical registration fees for TLDs are from $15 to $35 for 2 years of service.

Log Analyzer
A program that takes a server's "raw" log file data and summarizes it into easily-understood reports.

Log File
A file that lists actions that occurred. For example, web servers maintain log files listing every request made to the server. With log file analysis tools like WebTrends, it's possible to get a good idea of where visitors are coming from, how often they return, and how they navigate through a site. Using cookies enables Webmasters to gather even more detailed information about how individual users are navigating through a site.

Log File Management Tool
The Log Manager allows you to obtain raw server logs about your site activity and traffic. You can view and/or delete, print, download, and date your log files. You may disable logging altogether to conserve your disk space.

Your server logs can also be downloaded for use with other statistics packages. You can use the Web Stats function to analyze and view your log files in an easy-to-read, graphical display. While Log Manager allows you to manage your log files and view them in their raw state, Web Stats makes them human readable.

Login
An alias for an individual that is used for identification and authentication when accessing a computer system. Usually it is a sequence of characters and digits.

LOL
Laughing Out Loud.

Lossless
A compression scheme is loseless if no information is discarded during compression. 

Lossy
Lossy compression discards some information during compression. Useful when degradation of quaility is acceptable to dramatically reduce size.