Please add multi-user collaboration!

I would love see this simple to use package step up to a true family usage, I got both my sons and daughter do their finances (ages 21, 20,and 18) along with my wife. It would be very nice to see all of us consolidate our accounts together and exchange / collaborate in one master book of finances. this way we will be able save significant time in "re-doing" the book keeping (data entry!).
needless to say it would be ultimately perfect choice for small businesses (1-5 staff!).
Cheers