Recently, we've started community.languagetool.org, a new website that lets you browse all LanguageTool rules for all languages. The site also checks some Wikipedia articles, finding real grammar errors but also a lot of false alarms which need to be fixed gradually in LanguageTool. We're planning to add more features so that users can share their rules with other users. This way the website will hopefully some day deserve the "community" in its name. Of course, the site is still "beta" as every community-oriented website on this planet.