Depending on the service, it may be that they shouldn't use it while at work in the first place. But that's an aside, there's a simple technical solution. Every time there's a post about IE, and every time someone thinks (or believes themselves to be an example that) there's a single person on the planet who has to live with IE >= 6 when they don't want to, someone in the thread mentions Chrome Frame.
Depending on the service, it may be that they shouldn't use it while at work in the first place.
Sure. But if you run an online store it doesn't exactly benefit you to tell people when they should shop with you and when they shouldn't. Supporting IE may well mean higher sales.
