the site: command search is bringing up a list of the zipped video files on my site... google has attempted to index all of the content of each of the zip files, it's showing up as gibberish text surrounding the filename that's inside the zip file.
some of these zipped video files are showing up as what google thinks is a page full of japanese content that it attempts to translate, lol.
i can find no reference here or in the google website faqs about this capability of crawling and indexing the actual content of zip files... needless to say, it's trashing the google index with worthless data.
several weeks ago this website took an inexplicable nosedive in the ratings, so i'm also wondering if this zip issue is relevant to that.
Some time ago, several .exe files from my site were indexed. This wasn't a bug, they were correctly identified by Google as Windows executables. I cannot begin to guess why Google would be insterested in .exe files and they are no longer indexed.
Google probably has the technology to recognise many file formats that they do not normally index. In this case, something probably went wrong with experimental code.
But this thread serves a great reminder: If it's on a connected server, you're choosing to share. Don't be too consoled by the fact that the file is not viewable when doing a search. Neither are all of your site's backlinks.