Thanks for asking, I double-checked and there are of course not even any informal standards for web accelerators, apart from their common appeal to the HTTP 1.1

Thanks for asking, I double-checked and there are of course not even any informal standards for web accelerators, apart from their common appeal to the HTTP 1.1 standard when the issue of link following safety comes up: http://webaccelerator.google.com/webmasterhelp.html#prefetch3 http://webaccelerator.google.com/webmasterhelp.html#prefetch... I've edited my post. Thanks for your reply.