The whole reason why I want to register at mybitcoin is that I'm under the impression that you MUST go this route in order to accept BTC payments for a web-store, but maybe I'm wrong, if somebody has experience using different means, would appreciate a note on that. I'm setting that up for OpenCart based store.
I don't know anything about OpenCart, but you don't need mybitcoin.com (or similar) to accept payments on a website.
It's possible to install and run bitcoin directly on your server, however it's a bit more complicated.
Sure, I can set it up just like a CASH terms, then issue an Invoice with my Bitcoin account number and wait for the payment to come settling the invoice, then ship the goods.
But since I wanted to do it quick and easy and fast, I've looked up OpenCart extensions for Bitcoin support, and had found only this one - opencart-bitcoin-payment-module-v03-beta.zip - which has this clearly in the README:
About
BTC payment via mybitcoin.com module for opencart.
There is a thread about somebody pledging 100 BTC to write an extension for OpenCart, but seems that the only thing that resulted from this is this one (that uses mybitcoin.com). Although hacking is very cool, I need to think about cash flow also... so I'm trying to figure out simple ways to get this going with OpenCart.