So let's say that I want a way for readers of a blog to send me Bitcoin donations. Putting 1 address in a QR code up there is deemed unsafe because everyone can see all the transactions to that address, right?

Is there any (backend? Or JavaScript) system out there that can provide a random (?) address to my HD account and make a QR code out of that so people can't easily see the total amount of bitcoins there are on my account?

I haven't found anything on Google yet but it could be my GoogleFu is lacking.

Thanks in advance!