Wikitravel is a travel guide using wiki software. It looks a lot like Wikipedia, but that’s only because they use the same software to operate the site. It is owned by a separate company called Internet Brands, Inc., which also owns another travel wiki called World 66.
Wikitravel’s Berlin and Munich pages have the cold, sterile wiki page look to them. World 66’s Berlin and Munich pages look a bit more like a traditional travel site. Both, however, can be edited by anyone, which means all advice should be taken with the same grain of salt that you use when reading a Wikipedia entry.