adding the addthis individual social buttons on every image is problematic. For every page infinite-scroll loads it loads about hundred javascript files to generate all those individual social like buttons. Really drags loading of the page. We are just going to have single addthis share button per image instead. Much less resource intensive and works in IE 7-8 mostly. IE 7 does not recognize the url passed through the addthis button. Just uses the gallery page the image is sitting in not the individual image link.
Look for the page id in the html body tag class attribute. Start there then drill down to the h1 tag you want to hide. Do something like this in your css file: