[tld-acceptance] There is a RFC about this issue
I'm suprised it was not mentioned in the beginning of the discussion: Network Working Group J. Klensin Request for Comments: 3696 February 2004 Category: Informational Application Techniques for Checking and Transformation of Names ... Abstract Many Internet applications have been designed to deduce top-level domains (or other domain name labels) from partial information. The introduction of new top-level domains, especially non-country-code ones, has exposed flaws in some of the methods used by these applications. These flaws make it more difficult, or impossible, for users of the applications to access the full Internet. This memo discusses some of the techniques that have been used and gives some guidance for minimizing their negative impact as the domain name environment evolves. This document draws summaries of the applicable rules together in one place and supplies references to the actual standards.