DigiByte (DGB) is an open-source cryptocurrency running on the DigiByte Blockchain, a decentralised international blockchain created in 2013. The DigiByte coin was developed in 2013 and released in January 2014. Although based on Bitcoin, adjustments in the code allow for improved functionality, including 15-second block time and improved security. As of December 2017 DigiByte has a total market cap of over US $135 million. It is the longest public blockchain in existence.
Digibyte faucets are a reward system, in the form of a website or app, that dispenses rewards in the form of a satoshi, which is a hundredth of a millionth DGB, for visitors to claim in exchange for completing a captcha or task as described by the website. There are also faucets that dispense alternative cryptocurrencies. Rewards are dispensed at various predetermined intervals of time. Faucets usually give fractions of a digibyte, but the amount will typically fluctuate according to the value of digibyte.
Faucets are a great way to help introduce new people to digibyte, or to your favourite altcoin. Many faucets provide information to newbies as well as offering them some free coins so that they can try before they buy, experimenting with a test transaction or two before putting real money on the line. Since this whole area is so new and a bit scary to some people, who perhaps don't quite trust it with their hard earned cash yet, this is a great way to promote digital currency and bring in new users.