5 miles seems kinda tight, perhaps this could me city wide for smaller towns

These types of apps seem to be overwhelmed with people just clearing out their junk drawers. It might be helpful to have some type of curation or voting.

Looks similar to the app Walapop.

I've used this for a while. Loads of spam but occasionally you find a good deal :)

There are so many app in the present market. So have to choose which one you wants. you can also follow onata app as a reference.

Pros:

Nice app.

Cons:

Similar like nest guest app.