These guys have tried:
bit.ly/nEQvml - Storably, abandoned.
sparefoot.com/ - started as a P2P, but pivoted to a mom and pop aggregator.
This UK site looks to be doing only ok: sharemystorage.com.
The storage industry is large: http://bit.ly/LXaB86 and probably ripe for disruption.
Maybe the timing is right for this to be well-executed.
Anyone interested or have any insight?