On one side of the coming rupture was Winer. Winer was impatient to evolve RSS, but he wanted to change it only in relatively conservative ways. In June, 2000, he published his own RSS 0.91 specification on the UserLand website, meant to be a starting point for further development of RSS. It made no significant changes to the 0.91 specification published by Netscape. Winer claimed in a blog post that accompanied his specification that it was only a “cleanup” documenting how RSS was actually being used in the wild, which was needed because the Netscape specification was no longer being maintained. In the same post, he argued that RSS had succeeded so far because it was simple, and that some of the changes being proposed in the Syndication mailing list would only make RSS “vastly more complex, and IMHO, at the content provider level, would buy us almost nothing for the added complexity.” He was especially set against any plan that would add namespaces to RSS or reintroduce the RDF formalisms that had been dropped before the release of RSS 0.91. (Namespaces would basically allow programmers to define sub-formats of RSS, meaning that cool new functionality could be added to RSS without everyone agreeing on every detail. But namespaces would make writing software to read RSS more challenging.) In a message to the Syndication mailing list sent around the same time, Winer suggested that these issues were important enough that they might lead him to create a fork: