There's no way to search CodeShares so only people who know the URL can access it. And only the latest instance is saved (using Firebase) so you can always delete the code once you're done with it.
I'd like to believe you, but these days I think it's fair to say that one should try to leak the least possible amount of information to the outside, even seemingly harmless information or data could easily find its way to storage somewhere, and in maybe 10, 15 years have become less harmless than it once seemed to be.
But don't get me wrong, it IS great and working fine, especially the simplicity and ease of use are awesome!
I would really like to see some login feature that allows you to keep the code private (in case someone guesses or discovers the url). Otherwise, its a pretty neat site and I would definitely use it
Dead simple code sharing and collaboration. I often find myself running over to coworkers desks to help them eyeball a certain file or snippet. One really great use case I can think of is conducting remote coding interviews.
I'd like to use that with my colleagues, but not if it means our code crosses the internet.