I have recently installed Yoast's WordPress SEO and Photocrati's NextGEN Gallery plugin and need help to understand how the two plugins work together to help Google index my images...
The latest version of NextGEN Gallery claims to make it easier for images in a gallery to be indexed by Google and returned in a Google image search. This is aided by the XML sitemap feature of the WordPress SEO plugin which creates a separate sitemap for different content types, including images.
All of my images have about a dozen keywords in the 'tags' field and all of these 'tags' are listed in the http://www.domainname.com/ngg_tag-sitemap.xml sitemap.
Now what I am really struggling to understand is how on earth Google is supposed to know from crawling this sitemap which images are tagged with which tags and return that image in a search?
Any help with this, or another way to get the images in my NextGEN Galleries indexed by Google will be very much appreciated!