Ideas

I can't think of any names, but there are tons of websites where one can go and play in a sandbox where all changes are visible by all users. Some of 'em use a paint-like interface, and others get more creative, using, say, magnetic words like you'd find on a fridge.

I like it, but have two concerns:
1. Is this possible technically? Would an infinitely large web page be fast and responsive to navigate and explore?

2. What about vandalism and spam? How would that be handled if no registration is required?

I think this would be a disaster. First of all you'd end up with massive amounts of profanity (like a real bathroom stall), a bunch of stupid gang tags or whatever, and various rights-infringements like peoples' phone numbers, addresses, threats, whatever. I don't think this adds much value to the world.

Wow. I had an idea like this a while back. (When I was in a skeezy stall at a local mall). I hope this gets launched, it's an easy idea to pull off.

Another thought: You have a graphitti pen. You also have a "paint brush" that wipes out the entire wall-- like a janitor undoing all of the graphitti. Maybe the paint brush happens automatically every few hours making the frequent visits important. Maybe advertisers can put up stickers while everyone else has a pen.
I would been keen on talking more about this idea. Start a business (http://www.cambrianhouse.com/business/) and I will sign up as a web developer.