With this wiki you can store all of the regularly used information and share it with the members of your team who often need it like band members, management, label and booking. A well done wiki can not only save countless hours of useless fetching and email writing, but it helps keep information that can easily be forgotten in one easy place. Simply invite the members of your team who should be a part of it to the doc and start storing information. Easy!
One of the biggest time wasters in managing your group is to have to send emails to parts of your team asking for passwords, addresses, press clips, bios, etc. One way to solve this is to make a wiki in Google Docs for your group.