Yesterday a friend of me complained about Gmail storing all subject lines in Firefox's browsing history, which in my opinion is a huge privacy flaw. I never noticed this because I use Thunderbird. After some googling, the only solution I could come up with is the most obvious one: Use private browsing when going to Gmail.
But I think this is not an acceptable solution (it can be easily forgotten to switch modes) nor it is telling the user to delete all Gmail pages from history after each use. So I'd like to know your opinion on this, and any solutions you may think of. Think of a filter for certain URLs not being stored in history, or a script that will delete URLs from history matching a certain criteria.
Thank you very much.