As an act of defiance, I will only use advertize. I’ve added the word to my spell check. As an American, it makes sense for me to use this spelling since other -ise words use the more phonetic -ize suffix.

In other places, such as Great Britain and Canada, labelled is a more common spelling than labeled.

While Web site is still doing well in the U.S., it is all but dead in the U.K. Current Google News searches limited to U.K. publications find only about one instance of Web site (or web site) for every thousand instances of website. The ratio is similar in Australian and New Zealand publications. In Canada, the ratio is somewhere in the middle—about 20 to one in favor of the one-word form.

Exceptions are easily found, however, especially in American sources, where Web site (or web site, without the capital w) appears about once for every six instances of website. This is likely due to the influence of the New York Times, which is notoriously conservative with tech terms. The Times still uses Web site, and many American publications follow suit. Yet even those that often use Web site in their more closely edited sections tend to allow website in their blogs and other web-only sections.