...is it ok to store btc at freebitco.in during the forks to be safe about your coins. ...
i have not used that site much, but i think they don't allow you to withdraw the fork coins. for example if bitcoin gold happens, they won't allow you to withdraw bitcoin gold, but you can convert it to bitcoin and withdraw bitcoin. and the price is what they set it to be so you may not get the best rate.
that may not be what some people want, they may want to have the freedom of choosing when to sell and at what price.
That's not what they say in their official statement or what happened with the last fork. They allowed a period of about a month for people to withdraw BCH from the site if they didn't want to convert it there.
HARD FORK POLICY
Bitcoin has 2 hard forks planned in the near future - "Bitcoin Gold" and "Bitcoin Segwit 2x". As we have done with the "Bitcoin Cash" hard fork in the past, we shall support withdrawals of all hard fork coins as long as they are viable - ie. have wallet support, a working blockchain and straightforward redemption policies. The "Bitcoin Gold" hard fork currently does not seem to be a viable fork - since they have not given any information about the fork on their website (btcgpu.org) and have no supported wallets yet. If there are no wallets that support it, we shall not be able to make "Bitcoin Gold" available for withdrawals. If however, there is wallet support for "Bitcoin Gold" before the hard fork date and the block number for the fork is announced in advance, we shall make it available for withdrawal.
We shall be supporting the "Bitcoin Segwit 2x" fork since it already has a working wallet and has announced the block number when the hard fork will happen. If a majority of miners switch to "Bitcoin Segwit 2x" and it has the chain with the most Proof-of-Work, we shall make it our primary coin and "Bitcoin Core" coins will be made available for withdrawal to your own wallets, otherwise "Bitcoin Core" shall remain our primary coin and "Bitcoin Segwit 2x" coins will be made available for withdrawal to your own wallets. In either case, users will receive coins in both the majority and minority chain equivalent to the balance that they had on the website prior to the hard fork.
We shall be pausing deposits and withdrawals temporarily before the "Bitcoin Segwit 2x" hard fork until a clear winner has emerged. Everything else on the website will function as usual. The fork is scheduled to happen at around the middle of November. We shall give advance notice of when deposits and withdrawals will be paused before the fork date.