Informe.com is a forum hosting platform, which puts together some of the most popular open source resources to allow users to create forums and online communities that look at work nicely.
For instance, Informe uses Wordpress for blogging, MediaWiki for wikis, Gallery 2 for image support, phpBB for general forum support, and Pligg to manage content in a no-hassle-at-all way. Once you create your forum, it gets a subdomain URL, like someforum.informe.com. The site is big about tags, and its tag cloud seems to be quite useful to understand what this community of forums is going on about. If you are not familiarized with tag clouds, take a look at the categories into which the forums are sorted, and which include anime, sports, teens, music, education, computer and internet, TV, and many other interesting topics. 
