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RSS is a family of XML dialects for Web syndication used by (among other things) news websites and weblogs. The abbreviation stands for: Really Simple Syndication (RSS 2.0) The technology of RSS allows Internet users to subscribe to websites that have provided RSS feeds; these are typically sites that change or add content regularly.
Unlike subscriptions to many printed newspapers and magazines, most RSS subscriptions are free. The RSS format provide web content or summaries of web content together with links to the full versions of the content, and other meta-data.
OPML (Outline Processor Markup Language) is an XML format for outlines. As a native file format for an outliner application, it has since been adopted for other uses, the most common being to exchange lists of RSS feeds between RSS aggregators.
The OPML specification defines an outline as a hierarchical, ordered list of arbitrary elements. The specification is fairly open which makes it suitable for many types of list data.
gzip is short for GNU zip, a GNU free software file compression program.
gzip is based on the DEFLATE algorithm, which is a combination of LZ77 and Huffman coding. DEFLATE was intended as a replacement for LZW and other patent-encumbered data compression algorithms which, at the time, limited the usability of compress and other popular archivers.
The gzip file format holds a single compressed file. gzip is not to be confused with the ZIP archive format, which also uses DEFLATE.
Web syndication is a form of syndication in which a section of a website is made available for other sites to use.
Web syndication refers to making Web feeds available from a site so other people can display an updating list of content from it (for example one's latest forum postings, proxy lists, etc.). This originated with news and blog sites but is increasingly used to syndicate any information.
Secure Sockets Layer (SSL) and Transport Layer Security (TLS), its successor, are cryptographic protocols which provide secure communications on the Internet. SSL provides endpoint authentication and communications privacy over the Internet using cryptography.
While it can add security to any protocol that uses reliable connections (such as TCP), it is most commonly used with HTTP to form HTTPS. HTTPS is used to secure World Wide Web pages for applications such as electronic commerce. It uses public key certificates to verify the identity of endpoints.
Unix time, or POSIX time, is a system for describing points in time. It is widely used not only on Unix-like operating systems but in many other computing systems, including the Java programming language. It is an encoding of UTC, and is sufficiently similar to a linear representation of the passage of time that it is frequently mistaken for one.
The Unix epoch is the time 00:00:00 UTC on January 1, 1970. The Unix time number is zero at the Unix epoch, and increases by exactly 86 400 per day since the epoch.
This percentage indicates how often this particular proxy server responds to client requests. If proxy checking software allows you to keep the history of proxy checks it is possible to calculate reliability value.
If you divide number of successfull checks by number of all checks and then multiply it by 100% you'll get the value of reliability of this proxy.
So, for example you checked proxy 10 times and seven attempts were successfull while three failed. This means that proxy reliability is 70%.
ISO 3166-1 alpha-2 codes are two-letter country codes; they form the best known part of the standard ISO 3166-1 and (with a few changes) are used for Internet domain names.
The codes are used in different environments and are also part of other standards. In some cases they are not perfectly implemented.