I was wondering. What is stopping exchanges that don't support the new BTG using your bitcoin and claiming it for them selves, without you ever knowing about it?
Like Bittrex and cryptopia, they didn't support the Bitcoin Gold. But what is stopping them to use your bitcoin to collect bitcoin gold, without you ever knowing?
What is your opinion guys?
The point here is, if you don't control your own funds and have to trust someone else or a third party, like any of the exchanges you mention... then yes, of course there is nothing to stop them from ever doing anything to:
"collect bitcoin gold" or any other fork coin
"collect" airdrops like byteball and stellar lumens.
do something else with your bitcoin.
run with it one day.
Learn your lesson. Don't store coins at exchanges, fork or no fork.