If you're creating a multi-lingual website then you should look elsewhere, since there's no native support for that, and the available plug-ins are of mixed quality and completeness.

Other than that it's very flexible and super easy for users to work with, because it's exactly tailored to what they need. Only potential downside here is that the developer needs to know the XSLT language. Without that knowledge, you're not gonna get anywhere, unless you're using a pre-built installation, a so-called ensemble.