Isn't this what you want, anon?

Spam is an inherent issue in open systems (or rather systems that try to be as open as possible, in service of network effects). The DOS issue is different on different levels, be that router, server or user; fake request, fake data and fake information respectively. Clients and relays both can help filter spammy info, relays will have to find ways to deal with spammy data, and it is very interesting to see this type of work trying to tackle the most fundamental layer of it all. It is also the most far out there to be honest, and i am personally uncomfortable to even dream that big...can you imagine? "Lets fix Twitter" turning into "lets fix the entire Web", ultimately ending up with "oops, guess we have redone the entire internet". Maybe it has been a long held vision in my minds eye, but I keep my visions to myself.

I wasn't expecting a song, but nice choice

There will be DOS challenges, although the physical aspect of it helps us a bit there. I'm more worried about session hijacking/snooping as thats a really hard problem to tackle looking at the way wifi stack works, but that's a problem that TollGate itself cannot solve. It's absolutely far out and perhaps unrealistic? I don't know. What i do know, is that the technical limitations which before inhibited this future from becoming reality have been lifted. That makes me incredibly optimistic, and a vision can guide us. Not to get there, but to be inching towards it, little by little. That to me seems worth the effort. I appreciated the song, thanks!