That will only happen if you visit the wiki via www.classicamiga.com as it opens the wiki into an iframe within the main site. If you go to http://wiki.classicamiga.com it won't do that and any links will open in a new window or tab in your browser.

BTW, we really need to get back into working on the wiki at some point soon. I've not touched it much in a long time. I did do a bot of work on some of the pages recently, but not too much. There is loads to do on the site and add. As soon as I get time I will begin again on adding content. I also want to develop the front page of it a lot to make it more friendly, and create a more contained look with content boxes showing links to each area, rather than just the current list.