I decided to accept bitcoins in my online store only to realize that anyone who wants can type in my wallet address into the block explorer and see each and every transaction made to my address. This way, anyone can know hoe much money my business is making. Today I obviously keep this data secret and never publish sales data...
Isn't that a HUGE reason for businesses not to accept bitcoins?
Ummm... no.
Aside from all the points in this thread about the simplicity of generating one address per sale, and so on (keeping multiple wallets for item categories, & etc.) - nobody knows how much your business is 'making' (i'm guessing you mean
net income?) unless they have access to your Cost of Goods information. Even assuming anyone would go to the trouble of tracking down every bitcoin address you assigned to every sale, without CoG and overhead information your raw gross is pretty meaningless.
I'm also going to take a guess that you're accepting forms of payment other than bitcoin. And since these other payment types (credit cards and so forth) are managed by folks who give no thought to anything other than your best interests; and who would never dream of using, selling, or otherwise disseminating that information - to all comers, and for pennies - without your expressed consent, I guess your secrets are safe, hmmm? [ / snark ]