Thank you TwinHeadedEagle.
I found another article online, and it said to create another "person" in my chrome browser settings, then delete the "person" that was already there. So I did that, and Ads by AdsAlert has not shown its face anymore since then. However, I did get another pop up from another Deals by something or other, I will make sure to take note of the Ad's name if it happens again.
I am glad ads by adsalert isn't bothering me anymore, but there is obviously still something on my computer, otherwise the other popup wouldn't have happened. so I will let you know on this thread when I see another popup.
The other thing, is that I was not aware that all my bookmarks and chrome's memory was going to disappear when I removed the "person" from my chrome settings, so I was annoyed about that, but it's not the end of the world. Just have to type everything out now, when before I was used to shortcuts of just typing one or two letters to get to a website. Most of my bookmarks were articles or recipes I was saving to read (or make) at a later date, but never got around to anyway, so that really isn't too much of a bother. It forced me to tidy up
I'll let you know here when another popup happens. Thank you for your help!