Seems like Urbanspoon should be using some sort of scraping counter measures to make things a little more fair. I sent them an e-mail through their contact form (of course I wouldn't be suprised if those are sent straight to the trash/spam folder).

Also, is scraping legal? I would imagine, at the very least, the OP and others are violating the TOS. I have written a few scripts of my own for fun, but I would be careful about bragging about it on a public blog.