You should NEVER enter a private key that still contains Bitcoin anywhere... be it our service, a different third party service, individuals, decentralized wallet or anything else in between.  

Our service doesn't require private keys in order to check to see if your address qualifies for any of the forks we check.

We do have to have the private key if you want us to liquidate your coins for you... you are however welcome to download whatever wallet you need to sweep your own coins.

Our service saves people a ton of time, adds a layer a privacy (there has been some serious speculation that these forks of Bitcoin are an attempt to triangulate large Bitcoiners) and prevents the need of downloading yet another shitcoin wallet.

As I've stated... we've paid out well over $125,000 in Bitcoin Cash liquidations alone this month alone and I'm sure we've assisted in helping people find at least a million dollars this month.  

(Feel free to verify https://freebitcoins.com/clamchecker/digs/ - https://freebitcoins.com/clamchecker/bcc_digs/ - https://freebitcoins.com/clamchecker/wallets/ )