New idea: optionally write tags to file

["Lorenzo Milesi" <lorenzo milesi gmail com>]

I have a request, even considered it can be useful (I'm not sure).

I have write metadata enabled, so that tags and other stuff got
written to the file.
Sometimes it happens to me to create some temporary tags, used i.e.
for managing pictures of the same events but taken with different
cameras with wrong time.
Those tags shouldn't be written to file as keywords!

So I'm wondering: is this a stupid thing or not? I mean, it's useless
to implement this, because a "foo" keyword into a jpg won't hury
anyone, or can be considered as an option?

Ciao :)
maxxer

p.s. sometimes I wake up with strange ideas... :)