We have various salary band levels. They're not public, but we do use them as a benchmark to make sure we're not bringing people in at the wrong level. I have definitely heard of a poor trend in the technology industry, particularly with smaller companies, that if somebody comes in and asks for a lower salary, they'll happily pay them that lower salary. This essentially prevents us from doing something like that if we were to make a bad judgment call on it.
We also review salaries twice a year. If somebody joined the company four years ago, when salaries were a little bit lower—when we were a less successful company, and when we actually did pay less at the time—we make sure that we up their salary so that they remain within that band as we grow as a company as well.