I’d stay away from imgur. They’re basically a social media site now, with reputations that go up or down, presumably based on other users’ opinions of you. They’ve also changed the way their albums work-now if you make an album public, you can’t add any new images, and I could find no instructions on how to UNDO making an album public. Their organization style is awful, making it almost impossible to find anything you might actually want. The front page features their “hot” images, which are a mixed bag of political BS, things you might want to see, and vulgar/gross imagery.
The term Internet host or just host is used in a number of Request for Comments (RFC) documents that define the Internet and its predecessor, the ARPANET. RFC 871 defines a host as a general-purpose computer system connected to a communications network for "... the purpose of achieving resource sharing amongst the participating operating systems..."
Privacy options are available if you don't want your photos to be viewed publicly, and you can easily share a single photo or an entire album with anyone you like. ImageShack also hosts photos for businesses and has several applications (both for mobile and the web) that you can take advantage of to make managing and sharing your photos even easier.
Domain names are created to make IP addresses easy to remember. Every computer has an IP address assigned to it - much like a street address. But instead of having to memorize each IP address number, we assign domain names to these numbers so we can easily remember them. The domain name system, or DNS, takes domain names and translates them into their IP addresses so that computers can communicate with one another.