I also subscribed to the end2end mailing list on Saturday. Many of the participants were principal contributors to the original design of the Internet. I had been reading the postings from the public web page off and on, but a recent contribution by David Reed, my first UROP advisor, motivated me to join. I thought his comments were interesting because I have heard the other side of the argument (mostly from people who specialize in network optimization or some other analytical treatment of networks): complaints that there was no real research in Internet technology.
Finally, I made a couple of contributions to cambler's onthenet blog. I was thinking of possibly subscribing to the ICANNwatch blog also, but won't (at least for now). I have too many other things to do, plus the whole issue of new TLDs and so forth doesn't interest me as much as it used to. Which reminds me, time to work on some French before bed.