Advise the gallery on jQuery with the possibility of commenting the images

Yes, it really is ready to find.
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But the point is simple, as already said comrade above you can tie the system service review, usually, this JS code.
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The course is as follows (done in FancyBox):
1. When you initialize gallery set callback function.
2. A function which, when opening the image, will add to the content of the image (#fancybox_content for example) your code, let it be for example code VKontake reviews.

To store comments need some kind of backend + pictures loaded without changing the URL, so likely anything you find. Might make sense to order the desired functionality to the programmer and ask them to tie the gallery something like intensedebate.com/, I think it can be done, if desired

you can tie comments facebook, vkontakte, disqus or above.
well, I would do jquery address and aydishnik for commenting would be the hash of the url))
and listed prefer disqus

can you recommend a good resource webresourcesdepot.com. There has been a lot of good plugins for jQuery, including various galleries. You can look for.