Short and pronounceable domain names with 4 letter are very desirable because they are easy to remember, easy to market, quick to type in a mobile phone (very important these days) and great for branding. As they are short they require less keystrokes to type and are less prone to spelling errors than longer domain names. The fact that they are short makes them more prestigious. You can use them for any business, across any niche but they are also good for abbreviation and acronym usage. A memorable, 4 letter domain name ensures your website remains indelibly stamped in the minds of website visitors and that one day they will return. As the internet has run out of 4 letter domain names, these short names are very valuable and sought after even if they don’t spell anything in particular.