Very good product!
I have a problem when I validated the form on my website, because it couldn't find the next page. I fill up the contact/support form of Mooj.org and get a reply strait away to help me with me with SEF issues.
Afterwards, Proforms worked perfectly. Good product & very good support !
Whizzy Tag do exactly the same and the result look exactly like I had with Joomulus. The website to whom I add Whizzy Tag to is on Joomla 2.5. One of its module did interferate with Whizzy Tag. However, I got a reply strait away after contacting the support. They were very reactive and did fix the problem strait away.
Simple & very good cloud tags product with an excellent support !