Hi,
You'll notice that a lot of "login" based websites have a
Keep me logged in checkbox which if checked, creates a cookie that stores your password info for that site. Facebook is an ar$e like that as it randomly checks the box and you have to manually un-check it (which I do).
There are browser settings which can prevent the saving of passwords...
Internet Explorer 8+(Tools, Internet Options)
General Tab
General Tab - Delete History
Content Tab
Content Tab - Set AutoComplete settings
Setting these options (check/un-check) will allow for you to configure IE to
not save your username & password details.
OS