I do the same with email addresses, but receive very little spam. Mostly I block addresses that start spamming me with newsletters. I've thought about keeping a list, but most companies actually stick to the Dutch anti-spam laws (which are quite good).
Only Dropbox and one personal contact ever actually sold/leaked my email address, and Paypal of course but they hand my email address out to all merchants so they're almost certainly not to blame themselves (not beyond the fact that they hand it out in the first place).
I do the same with email addresses, but receive very little spam. Mostly I block addresses that start spamming me with newsletters. I've thought about keeping a list, but most companies actually stick to the Dutch anti-spam laws (which are quite good).
Only Dropbox and one personal contact ever actually sold/leaked my email address, and Paypal of course but they hand my email address out to all merchants so they're almost certainly not to blame themselves (not beyond the fact that they hand it out in the first place).