Spammers have programs that crawl the web looking for email addresses. By putting an email address in a standard format, you're pretty much guaranteeing yourself more spam, as your email address will definitely be picked up. It's a good thing you got her email addr wrong above :-)

There's no reason to think that at least some of these crawlers aren't smart enough at this point to pick up common patterns like "at" and "dot" but it still makes it a little harder, since "at" and "dot" occur frequently in English, and @ does not. If you're really nervous about it I recommend doing something less conventional -- even skigurl eat sonic doot net would be considerably less likely to be picked up.

although I realize that the "disguise" I used would be pretty easy to discover. Hopefully it's better than nothing.