Introducing airbrb
blog.airbnb.comI fell for this.. But I think this could actually make sense. I'm not thinking about ordinary people renting their desks, but there's bunch of co-working spaces, office hotels etc where this could apply. One app where you could check the availability and pricing, make the booking and then later settle the bill. For long term deals this obviously does not make sense, but sometimes when traveling you would like to have place to work just for half day or day.
April fools aside, over congestion and under utilized property is a problem where I'm originally from (Hong Kong) where the average citizen couldn't ever dream of owning property.
There are all sorts of businesses popping up that lets you rent your apartment out during the day, whilst you're at work etc... Obviously, they'll need to overcome security and user experience issues, but people are making headway in this area.