This just popped into my head, might be terribly wrong, but I would just do ajax. Like the way you implement autocomplete by listening to keyup events and retur

This just popped into my head, might be terribly wrong, but I would just do ajax. Like the way you implement autocomplete by listening to keyup events and returning stuff to fill the list of results. The thing is that this should be wicked fast to be instant, so some optimizations with load balancing and cache related things must be going on there as well.