Full disclosure gone bad

I'm for full disclosure when (a) it makes the vendor put out a patch sooner than later or (b) it contains enough information so that the people affected can mitigate the risk and it is posted at places where these people are probable to read it. But this recent post on security team screams of the I'm 1337, I can use nmap, I rooted 14716 computers sentiment. How does disclosing this flaw with such detail (like subnet addresses and the ISP name) help anyone? The story would have been just as interesting would he left those details out. And how many of the ISPs customers read or even know about this blog? Did the guy try to contact the ISP? He doesn't say. The most interesting part is that he publicly admitted to computer intrusion and may be liable under the UK law! Very nicely done there champ! I'm going now to contact some (hopefully) responsible people at Beyond Security (the sponsor of the blog) and the ISP to get this issue resolved.