Re: eMail fail
"To my mind, there is nothing more efficient than e-mail. It is to the point, ensures all recipients get the same version of a file, and doesn't require the avoidance of needless chat by seeming to be rude - you simply don't respond."
Email can be efficient. The people using it often aren't and you get included on conversations on which you did not need to be. Being assigned the task, and being able to remove yourself from the conversation is a good thing, but with email you're at the mercy of the person sending. So:
Asana.com (from personal use): I've used it and it works for small teams (as well as being free up to 30 users). The attachments are stored in one place so you don't needlessly get sent 3-4MB emails. It's on one location, and non-technical users grasp it quite easily, and your email is them broken nicely into projects. I wish more people would use it
Sharepoint: if you want multiple collaborators and don't want Google's cloud, and have the servers. Works well. Still doesn't stop people saving the document and emailing it around (negating the point of sharepoint...)