Separate from Joomla/ not Joomla, I have seen basically all the clients I have who have used email cloaking experience MAJOR problems with it in the last 3-9 months. Many (most?) major ISPs in the U.S. are now automatically categorizing email cloaked addresses as spam (Comcast, Earthlink, AOL, Verizon.. I could go on). Even when my clients have called their respective ISPs and complained and been "lucky enough" to receive instructions for how to remedy the problem, it hasn't worked. For clients with small websites, email cloaking has in the past been an easy way to set them up with website-connected email addresses. No longer so in my experience. I have since set up these clients with Google Apps for Your Domain <
www.google.com/a/
> which seems to be a decent solution for small sites. You just have to have access to the CNAME record of the domain.
Don't know if this is of help, but there you go!!
natalie