This is another example of a great project that uses social networking crowd-sourcing. I re-discovered this while looking through my Twitter following list. Check it out:

Vimeo: please specify correct url

The project gathers @replies and mentions from Twitter, and displays an animation on a giant screen mounted on a building based on users’ tweets. (When it first came out, it was mounted in London, but now, it’s looking for a place to stay.)

How it works

You send an @reply to its Twitter account, @thehellowall, using a combination of the following commands:

• circle
• square
• rectangle
• triangle
• shake
• faster
• slower
• bigger
• smaller
• And HTML colors.

A command could look like this:

@thehellowall White circles bigger

The Wall will interpret your command, and display it instantly. It’s that simple!