This widgets are actually neat, it will grab your readers' attention surely. I've tried putting it on the top of my pages, within the content and the sidebar - it works nicely.

I was pleased at the number of options to customized the widgets. You can schedule it and choose the urls you want the widgets to appear in.

I do wish there was the option for the CTA url to open a new browser window as this could be handy and it's more flexible that way. Maybe the option is there and I just haven't found it yet.