I don't live in a place where the internet is reliable enough for this to be viable anytime soon, but I do tend to err on the side of Murphy's Law with these things. Internet down, computer = paperweight. Does anyone doubt that this will come seven minutes before the big presentation that your entire business depends upon? I think also - with the exception of Gmail - Google's Apps are still not up to par, and are still generally a little slow for widespread adoption. I use Google Apps occasionally, and for nothing sophisticated, basically because I think that anything sophisticated is above the current power of the software. I mean, there are very few questions posed in the 'Excel questions thread' that Google Apps' spreadsheet software would even have an equivalent solution for...I guess that will come in time though, and in this particular project Google is the first to admit (read brag) that it is ahead of its time.