Though that's not necessary and if you think that's a good idea then go ahead.  Any third-party app/services that you have use for this? 
Think about using Lightning Network too, this is good for the microtransactions that possible you have to save from the possible high fee but as of now, the network isn't congested yet.

You helped to spread awareness about Bitcoin acceptance as an alternative to cash, this is not about the ads it also brings people to have an interest in Bitcoin investment.

If you have registered in an online store, you need to have a Bitcoin payment gateway.