The American Express article linked below discusses five free e-services that you can use to automate your business. These are great examples of e-services as discussed here.
I also think they are valuable. As the quote below says social media is free but to use it well does require a commitment of time and personnel.
You hear a lot of talk about social media being “free,” but it still requires a great deal of time and effort to make sure you’re presenting a consistent message across all relevant channels.