One of our larger clients built a series of staff pages on their site. Alongside each staff member profile they places a simple mailto type link with that person's email address.
I had my reservations about their doing this and voiced it - but it was what they wanted.
Rather than swim upstream with the client, I began looking at other options. I found Spam Stopper email cloaking module on www.Snowcovered.com . The module has no install package and there is no user interface. Simply place the DLL into the bin file of your DNN installation, make the well documented web.config changes and that's it. Done.
The module replaces any email addresses included in your site text as they render by modifying the text and then fixing it client side with Javascript. Non-Javascript browsers (i.e. spam bots) will not be able to index the email address.
I waste thousands of dollars on Snowcovered each year purchasing modules that don't work or are otherwise worthless. This was a refreshing experience and we wanted to say thanks to PHDobson for being an asset to the community.