We've begun to use Google apps in my company since yesterday. It contains some web-based tools like Gmail, tasks etc. According to it, we can check e-mail, even in my house or outside our office.
Of course, it would accelerate our productivity, especially for employees who work outside the office, but it may restrain our works in near future...:(
At first, we have to be accustomed to using them soon. Although I usually use Google tools, our tools in my company are restricted. Actually, we cannot use Google calendar at present, because of the compatibility for our internal schedule system.