With my smart phone I can manage contacts, calanders, appointments, via my Google account.
And spread sheets can be created by Excel. If it were necessary.
As far as my customers seeing their account, I can't do that. But, if I really wanted to show them a log of work done on their property, I suppose I could do that with other software I alreay have.
As far as fast an creative billing goes. I just started the set up for Google Check out. I'm going to have a Google Check out icon on my web site. If a customer isn't home, I'll simply write a bill and tell them to visit my site, click on the Google Check out icon, and it will be done.
But, for the most part, I knock on the door and tell them I'm done with the work. I get a check, I write a receipt right there.
I'm not a huge company with huge accounts. Wheter I'm a large company or a small company, is this necessary? I'm sure ther is a good reason... I'd like to know why...