I just got this popup - my reaction was - WHAT THE HELL IS THIS $*$&
IT IS INTRUSIVE AND HIGHLY ANNOYING. I feared that Avast may be going the way of AVG with multiple nagging hijacking webpage etc ads now. I came up to this forum to see what is going on.
I am relieved to read part of this thread & see that Avast is receptive and understanding of people's complaints of this - and that this should be either one time ONLY thing or extremely infrequent (provided that works - with AVG I had to junk it because their supposed "one time" ad campaign kept hijacking my desktop and opening a browser window at random intervals).
Popup nag ads are annoying, intrusive, and unacceptable, of ANY frequency. I expect to now be bugged by about 10 of friends/family who over the years I have helped convince & setup their PCs to use Avast, telling them how great, unobtrusive, and totally nagfree the free version is. Sigh...
If you are going to push ads, then they need to be IN THE INTERFACE of the application - not popping up on the desktop like some kind of spam or malware.
I feel that email notification of product sales is more acceptable than these popups and hope Avast will discontinue this type of popup spam approach.