DDOS attacks and AIS and so forth

After the DDOS attacks on several high-profile websites, a number of companies met at the White House and formed the Alliance for Internet Security. According to the web site, the AIS has several thousand members. Is the Alliance for Internet Security providing a useful function? Could something like the ISP-ISAC discussed at the last NANOG provide more or less assistance to Internet operators handling DDOS and other issues? Would an out-of-band communication system help Internet operators when a DDOS attack hits their network? Do Internet operators care about the issues affecting other networks so they can make plans, or do they prefer to concentrating only on things affecting their own network right now.