I run my business on Google Apps, using GMail, GCal, GDrive etc. Many 3rd party apps for CRM and project management have a plug-in for GMail that allows you to interact with the app right from within GMail. Examples are Streak (projects and pipeline), Pipedrive (pipeline mgt), Contactually (CRM) etc.

This makes it easy to integrate actions in mail, contacts with Simpleology.

What triggered this was when i tried to invite a new person into a project. I couldn't do it from the contact manager (I almost couldn't find the contact manager!). After contacting support the work around was to delegate a task to the person using their email address - then they could sign up!

This is a bit of a crazy workaround and so for Simpleology, I think the biggest impact could be from managing contacts. It seems to me that Google does contact management very well. Why not use them to do the contacts management instead of spending on re-creating the functionality? I certainly don't see myself managing contacts inside Simpleology.