See
article -- in which the new "smart" URL software prevented me from creating a label "Darwin" linked to a Wikipedia article. For some reason, it replaced the "Darwin" with "Domain Name Registration, E-mail, Web Hosting" and replaced the Wikipedia URL I supplied with link to domain Darwin. Ugly.
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Experiments indicate when I build a URL tag, if the text label I choose also appears in the URL, then the software decides to use the text label as the URL and substitute "Domain Name Registration, E-mail, Web Hosting" for the label.
PHP Code:
[URL=http://www.example.com]EEEEEEE[/URL] -- but with EEEEEEE replaced by example
is wrongly transformed into
PHP Code:
[url=http://example]Domain Name Registration, E-mail, Web Hosting[/url]