A website on which the user can receive bitcoins or altcoins at certain time intervals. Such resources are made available by advertisers (through banners, videos etc.). These sites are usually free to access, although they may require you to register an email address. On some of these sites, it’s enough to simply click on the link, while on others; you may have to perform a simple task such as filling a captcha. After a certain amount of time (generally about 2 minutes), a field will appear where you can enter the number of your BTC-wallet, which will then be credited with Satoshi (a subunit of bitcoin).