The best practice is to advertise generic addresses, and don't subscribe such addresses to anything. Then you know that harvested addresses will likely be those on your site, and you can weight them higher, or fail on a lower score, whichever. At least that's what I do. I also recommend the same practice for domain name registrations...generics only. So a car dealership might have sales@, service@, bodyshop@, financing@, etc., but those would just be aliases pointing back to named accounts like [EMAIL PROTECTED] jsmith should also be the account that is subscribed to newsletters or used for ecommerce, not service@, etc. I see my customers doing stupid things like signing up for contests as their generic addresses. That floodgate will never close.
When you list addresses on Web sites, generic or not, obfuscate them using HTML and/or URL encoding. Address harvesters don't take the time to unencode such things. Mix techniques if you want to be real safe. I doubt they would waste the time to modify their code seeing as how many addresses aren't obfuscated. This is something that I'm going to start practicing myself from now on. Using forms is also a good idea in many cases, especially for non-sales related things, like support for instance. You don't have to advertise an address in that event.
Matt
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