I am very hesitant to buy commercial Joomla Components, because very often I am not completely satisfied with what I get. But this can not be said for the Multisite Component. I am very happy with what it does and the features it offers and highly recommend it. The only thing that could use considerable improvement is the documentation. However, the programmer really made up for that through some personal support. Whenever I send an email I would get a response within hours. I so appreciated that, in particular since I had a problem with Multi Site on one of my Servers. It was not working properly and I could not figure out why. Turns out that the problem were my Domain Names. Multi Site does not interpret Internationalized Domain Names (IDNs), which are domains with non-ASCII-Characters. In order for Multisite to work properly, you have to insert the translated domain into the Domain List Field in Multi Site. Then it works like a charm.

I consider Multisite one of the best Components available and a MUST HAVE for anyone who has several domains.