AVG never discontinued their free version.
They forced an upgrade a couple of times, starting with 7.5 for vista compatibility iirc, and they presented ads for the pay-for-version in a slightly larger font than the links to the free version.
I don't understand why people continue to say they don't offer a free version. It seems a common misconception, but I'm absolutely baffled as to why. In my last job, customers would come in and have the pay-for version or Norton installed on top and claim it was because AVG stopped being free. If I was faced with having to stick my credit card into the slot in the front of my computer (wait, that is how you do it, right?) I'd take a heartbeat to read what was on the screen in MASSIVE LETTERS first.