In Windows' Internet Explorer, under the File command at the very top of the page, choose Send -- then you'll get a choice between sending the contents of the page in an e-mail (basically a snapshot of the page) or sending a link to the page (the web address) in an e-mail.
There is a similar function in Macintosh Safari -- Mail Contents of This Page and Mail Link to This Page. My Mac version of Firefox appears to allow just sending a link, not the contents.
The only hitch I see is that if you choose to send the contents of the page and the thread runs to two or more pages, you'll send just the first page.
-- Leslie