Here's what I wrote:
Subject: Creates More Problems Than It Solves
Feedback Submission Date:13 Jun 2012 at 17:44:48 UTC
Feedback:
...and its only purpose is profit.
1. It's bad for security. This will make phishing a whole lot easier.
2. It's bad for usability. Humans have come to learn that .com (and its ilk) signifies a website address. With now unlimited TLDs the only way to identify a ___domain is by a solitary dot, if that.
3. It will probably break stuff. Many a software / regular expression out there assume that domains will end in a relatively small list of TLDs. The new domains will not work with this type of software.
4. There is no benefit. The benefits listed on this page http://newgtlds.icann.org/en/about/benefits-risks all equate to selling more Internet real estate and profiteering for the sake of profiteering. ICANN is abusing its power.
This would be all sorts of horrible if it passed.
It's bad for security, it's bad for usability, it will probably break stuff, it's unfair. There is also no benefit to it.