I have a Google+ Share button for each article on my website.
At the moment, when I try to use it, Google+ uses an unrelated image in my document (probably the first one in the document above a certain size) as the thumbnail shown in the feed.
I'd like to specify a thumbnail url to use instead. I used the +1 button tool to generate the proper meta tags, but it just doesn't work. It's still using that unrelated image.
Anyone got it working?