This has potential but it needs more focus. Instead of making it so open ended (i.e. Want to grab a beer? -- which is kind of creepy), make it very specific. This is a service for allowing neighbors to easily share Wifi. It helps subsidize your wifi costs, etc.

You may already be doing this, but then you need to add/build the following:

- A way to actually take/manage payments from your neighbors.

- A way to manage access to the Wifi network (it's kind of like Lockitron for your wifi network in this way)

Once you have the idea simplified and the tools required to make this work end-to-end, as a potential user I'd rename my network to "RENT ME: Awesome Wifi Network" and see what happens.

Food for thought!