Couldn't this kind of thing just be spam? I created an account on https://bitcoinwallet.com/ https://bitcoinwallet.com/ which I've never even used, but I regula

Couldn't this kind of thing just be spam? I created an account on https://bitcoinwallet.com/ https://bitcoinwallet.com/ which I've never even used, but I regularly get payments of a single satoshi with an advertising message attached. If so, I would say spam is part of the economy, however unwelcome.