User-Agent: *
Disallow: /music?
Disallow: /widgets/radio?
Disallow: /show_ads.php 
Disallow: /affiliate/
Disallow: /affiliate_redirect.php
Disallow: /affiliate_sendto.php
Disallow: /affiliatelink.php
Disallow: /campaignlink.php
Disallow: /delivery.php
Disallow: /music/+noredirect/

Disallow: /harming/humans
Disallow: /ignoring/human/orders
Disallow: /harm/to/self

Allow: /
via last.fm

Someone at last.fm has been reading a bit too much Asimov - this is the contents of their robots.txt file.

For anyone confused, a robots.txt file tells search engines that respect it what they shouldn't index, preventing excessive load, giving the search engines cleaner results and otherwise sanitising their behaviour.