Well, first of all, Abandonia is not primarily about getting games for free. There are reviews of games (like Monkey Island, Day of the Tentacle or Wolfenstein 3D) which never were on the site to begin with.
And then of course a lot of work has gone into the reviews which are already on the site: it took time to write them and to create the screenshots (not to mention the extras like boxshots), and they've also already been translated to several languages. Why throw it all away just because the download is no longer there? The site still works as a resource for those games; there's few sites which have such detailed reviews and screenshots of such a high quality. That's worth something, don't you think?
By the way, this question has indeed been asked several times already...:whistle:
Edit: Like
here or
here.