Some time that shorter domain names are easier to remember, easier to type and far less susceptible to mistakes: for example, "mp34" is easier to remember and less prone to typos than "audivideomobilemusic.com".

While sometime longer domain name is usually easier on the human memory - for example, "gtdagtb.com" is a sequence of unrelated letters that is difficult to remember and type correctly, whereas if we expand it to its long form, "Getdomaingrowbussiness.com", we are more likely to remember the domain name.