Earlier quoted context omitted.
It's public data! You could scrape and index it now for free if you wanted...
They even throttle the friendfeed scraper which graciously pulls all its users data at once. You can't write a simple scraper that is not distributed in 100 of machines across the web to pull out their data.
Actually I just noticed you get 750h of free micro instance time from aws... I wonder if it would be worth doing. I imagine the link+tags are <100GB in total.