I can't get Google to work either. Maybe they have changed something, cause we haven't. I have no problem with Photobucket, and it's free to join too.
This is supposed to be the " shareable link " from Google.
https://goo.gl/photos/Gkex3U216Aez1mv89
This is the HTML from Photobucket
<a href="http://s1197.photobucket.com/user/mushroomjack1/media/IMGP0029_zpsl5z4v3ov.jpg.html" target="_blank" rel="nofollow">
</a>
You just have to copy & paste to your comment, the HTML Code on Photobucket
<a href="http://s1197.photobucket.com/user/mushroomjack1/media/IMGP0003_zps53c0b2bb.jpg.html" target="_blank" rel="nofollow">
</a>