I like that this service is very flexible, as it allows me to control my own work process, without any interference from third parties (as happens when working for other companies).
This has allowed us to keep costs down by not having to pay high salaries or benefits packages of people who have nothing else better to do than hang around waiting for you to complete your tasks! It's hard sometimes finding time to make changes that we feel are necessary - but they're usually made anyway so there isn't much point complaining. We've been able to translate many different languages into English within just one day each week, saving weeks worth of effort every month.