Danger! The next paragraph contains and links to sarcasm!
I knew the answer to this one — you use the highly intuitive special Google URI rewriting technique. (Sadly for me, Mike had already found the answer from elsewhere, and Twitter timestamps prevent me from taking the credit for informing him)
Your steering column isn’t randomly cut from time to time.
Since then, some nice analysis of the problem has been published (which is why this entry is largely a collection of links and not an attempt to explain the problem in detail).
- Breaking the Web with hash-bangs
- Gawker Learns the Hard Way Why ‘Hash-Bang’ URLs are Evil
- Hash-Bang URLs and overuse of AJAX
I think Peter put it best when he said: