I think EveryBlock is a hyperlocal platform worth checking out. I've
been thinking a lot recently about how it could be extended in all
sorts of interesting ways. It's built using the Django web framework.
I've done some work with Django myself, so extending EveryBlock
wouldn't be rocket science for me.
More generally, hyperlocal has been one of my interests for years.
One of my backburner projects is a hyperlocal website for the Creative
Cultural Industries sector in Brixton. I'm not very good at jumping
through local authority hoops, so never managed to get it off the
ground.
Regards,
Mamading.