It took two years, but now people start to use serversniff.net automated - despite the crazy redirect-mechanism. Some indian guy or gal put effort into doing a script to milk serversniff.net.
I expected this much earlier. Until now we had only very rudimentary abuse-checks to prevent serversniff.net beeing used for a denial of service against a host or a network. Now we tightened our abuse-checks to catch automated use on some scripts.
We encourage automated use of serversniffs functionalities, sites like www.paterva.com do this already - but please guys, talk to us before. We can make stuff easier for you. No need to write crazy perl-scripts or ugly curl-commandlines. We won't bite, really.