Writing for the web is still a complex and technically sophisticated activity. Too many tools, languages, protocols, expectations and requirements have to be considered together for the creation of web pages and sites. The complete overlapping of readers' and authors' roles are important evolution steps towards a fully writable web, as is the ability of deriving personal versions of other authors? pages. Much like Xanadu was dreamt of providing, we discuss the features of IsaWiki, a browser-based editing environment sporting a number of interesting functionalities, including our own idea of xanalogical storage. Through the use of IsaWiki every web page, local and remote, can be edited and customized during browsing, where links can be created and collaboration can be set up with a minimum of complexity.