Paypal Advice; Invoices, PayPal/Me or other?

[amethystpie.livejournal.com]

 I've seen a lot of posts flying around Tumblr lately warning artists to only use invoices when accepting commission payment. However, there seems to be no way of marking the invoice for services without an address, which makes my account look bad when there's several " unposted" items that are infact digital peices. I've tried googling for it but I've only found tips for much older versions of Paypal.

I had started using the Paypal/Me system and asking people to leave their address out of it, which worked but I saw in those same posts that Paypal where clamping down on the use of it for digital goods. When I take comms, I usually ask people to only leave a simple " code word" so I know it's their payment.

Is it all fear-mongering and bad advice?

How are other artists taking payments through paypal for digital media?