In my directorydirectory of online Bible translations I link to any known electronic copies or references to hardcopy facsimiles and reprints, I suggest this would also enhance The Internet Bible Catalog. For instance a rare translation like William Whiston's Primitive NT may be downloadeddownloaded for free as a facsimile in PDF as a part of the Microsoft Live Book Search.
All of the works I'm adding currently are available as free downloads on The Internet Archive Digital Library When Microsoft LiveBooks Closed up, Microsoft released any restrictions they had on the scans done during their sponsorship, and the Internet archive has no restrictions on their works, so these works are now in the public domain.
There are probably more works of scripture available on Google Books than on the Archive. However, the situation with the licensing of the works on google is not quite so clear. the works come with a plea to keep the works in a personal, noncommercial environment. I'm no lawyer so I can't say whether that allows for listing them on this (seemingly not-for-profit, but not clearly declared an IRS 5XX non-profit) or not.
For works that are not in the public domain, (including public domain titles that have been scanned by commercial entities who are restricting the output of their scan,) linking directly to the download would not be wise. That is posting a link here that pops up a save-to-location dialog. Linking to the top level site (whatever.com with no /somethingelse appended to it) is definitely OK and linking to the highest level which shows the work (but also allows the scanning site to get in some ads or sales-pitch) would be unlikely to raise any hackles, since it would increase traffic for them.
You might be interested to look at our new web site worldbibles.org which lists over 14,000 links to Bibles in 4,100 languages. These links include a wide variety of media formats. If you know of other Bibles that are not listed, and you'd like to add them to the site, please respond to the response form there. The site is completely non-commercial and simply indexes links to Bibles.