I believe that most OKI microline printers are used for business purposes, as are most other dot matrix printers. The microline can be seen in Airports and Hotels all around the country. I have used them in a business capacity for several years and always found them to be outstandingly reliable. I have now been fortunate enough to pick one up for home use. It is second hand with quite a few miles on the clock but is ideal for my uses since I send out a lot of letters and type up reports etc. for my college course. Make no mistake, dot matrix printers are for text only, don't even consider printing graphics on one - it just looks crap. But as a text-only printer the Microline 520 is very hard to beat. It prints as if it was new, ribbons are very very cheap and last for .... well I can't even remember the last time I changed one. If you print a lot of text you would definately do worse than to get a hold of one of these printers. For business use they are outstanding. I also have an OkiJet 2500 for graphical stuff, so it is obvious that I am a big fan.