In both examples, the spaces around the at signs in the e-mail addresses are incorrect. If you have Web access, it's best to try out all URLs to make sure they don't contain such typos. If not, you'll have to query, rather than fix, anything that looks funny. Unfortunately, most Web pages are neither books not journal articles, and Turabian doesn't give examples of how to cite them. Like most references, a Web document should ideally have a title, an author, and a date, but things aren't always so easy.
Most pages have a title of some sort.
In fact, a properly constructed HTML document must have a title. Often the author's name, or at least a link to the author's home page, can be found at the bottom of a Web page. Look at all associated pages before giving up and listing the document with no author. The date for a Web page should include a month and day, since such documents can change frequently. Often a page includes the date when it was last updated, which is equivalent to the publication date.