we do not share your data with anyone and there are many ways to control the visibility and storage life of your data here.
but the internet is a public space and you should always assume your data could be compromised.
be smart with your password, use tor or a vpn, and use pgp for sensitive communications.
Recheck the value you sent (if it includes postage fee etc). I first sent 0.0000186 instead of 0.0186 A little confusing but I soon realized my mistake, resolved the situation and told the seller to keep the first order as a thank you gift/tip. It's good to be good to others =) . Hope this helps kmarsh87.