このコードは tombloo/tombfix 用の Creative Commons License の記述を追加するパッチです。このコードのライセンスは tombloo/tombfix と同様にパブリックドメイン(CC0)です。Patche for tombloo/tombfix to add creative commons license description.This code license is public domain(CC0), same as tombloo/tombfix.

CCAppend.js

(function() {
Tombloo.Service.extractors.register({
	name : 'Photo - DeviantArt',
	ICON : 'http://st.deviantart.net/icons/favicon.ico',
	URL  : 'http://www.deviantart.com/',
	check : function(ctx){
		var logs = Components.classes["@mozilla.org/consoleservice;1"].getService(Components.interfaces.nsIConsoleService);
		if (ctx.onImage) {
			logs.logStringMessage("!0 " + (ctx.target.src.match('^http://.+\.500px\.org/.+/.+/.+\.jpg$'))?"true":"false" + "!");
		} else {
			logs.logStringMessage("!0 !");
		}
		return ctx.onImage && 
			ctx.target.src.match('^http://....\.deviantart\.(net|com)/(....?|images..?)/');
	},
	extract : function(ctx){
		var authorElement = $x('//div[@class="dev-title-container"]//a[contains(concat(" ",normalize-space(@class)," "), " username ")]');
		var cc = $x('//div[@class="cc_license_text"]');
		if (cc) {
			cc = cc.innerHTML
			       .replace(/<\/?em>/g, '')
			       .replace(/<br>/g, '')
			       .replace(/rel="license"/g, '')
			       .replace(/target="_blank"/g, '')
			       .replace(/  +/g, ' ');
		}
		var url;
		url = ctx.target.src;
		return {
			type      : 'photo',
			item      : ctx.title.extract(/(.*) by .+ on deviantART/i),
			itemUrl   : url,
			author    : authorElement.textContent.trim(),
			authorUrl : authorElement.href,
			license   : cc,
		};
	},
}, 'Photo', false);

Tombloo.Service.extractors.register({
	name : 'Photo - 500px',
	ICON : 'http://500px.com/favicon.ico',
	URL  : 'http://500px.com/',
	check : function (ctx) {
		var logs = Components.classes["@mozilla.org/consoleservice;1"].getService(Components.interfaces.nsIConsoleService);
		if (ctx.onImage) {
			logs.logStringMessage("!0 " + (ctx.target.src.match('^http://.+\.500px\.org/.+/.+/.+\.jpg$'))?"true":"false" + "!");
		} else {
			logs.logStringMessage("!0 !");
		}
		return ctx.onImage && 
			ctx.target.src.match('^http://.+\.500px\.org/.+/.+/.+\.jpg$');
	},
	extract : function (ctx) {
		var authorElement = $x('//a[contains(concat(" ",normalize-space(@class)," "), " user_profile_link ")]');
		var ccTypeElement = $x('//a[contains(concat(" ",normalize-space(@class)," "), " license ")]');

		var cc = '';
		if (ccTypeElement && ccTypeElement.href && ccTypeElement.href.match('^http://creativecommons.org/.*$')) {
			var ccText = ccTypeElement.attributes['data-tooltip'].value;
			cc = 'Some rights reserved. This work is licensed under a <a href="'
			 + ccTypeElement.href
			 + '">'
			 + ccText.trim()
			 + '</a> license.';
		}

		var url = ctx.target.src;
		return {
			type      : 'photo',
			item      : ctx.title.extract(/500px \/ (.*) by .*$/i),
			itemUrl   : url,
			author    : authorElement.textContent.trim(),
			authorUrl : authorElement.href,
			license   : cc,
		};
	},
}, 'Photo', false);


Tombloo.Service.extractors['Photo - Flickr']['extract'] = function(ctx){
	var id = this.getImageId(ctx);
	return new DeferredHash({
		'info'  : Flickr.getInfo(id),
		'sizes' : Flickr.getSizes(id),
	}).addCallback(function(r){
		if(!r.info[0])
			throw new Error(r.info[1].message);

		var info = r.info[1];
		var sizes = r.sizes[1];

		var title = info.title._content;
		ctx.title = title + ' on Flickr'
		ctx.href  = info.urls.url[0]._content;
		var largestSize;
		if (info.rotation == 0) {
			largestSize = sizes.pop();
		} else {
			sizes.pop();
			largestSize = sizes.pop();
		}

		return {
			type      : 'photo',
			item      : title,
			itemUrl   : largestSize.source,
			author    : info.owner.username,
			authorUrl : ctx.href.extract('^(https?://.*?flickr.com/photos/.+?/)'),
			favorite  : {
				name : 'Flickr',
				id   : id,
			},
			license   : info.license,
			date      : info.dates.taken,
		}
	}).addErrback(function(err){
		return Tombloo.Service.extractors['Photo'].extract(ctx);
	});
};

addAround(
	Tombloo.Service.extractors,
	'extract',
	function(proceed, args, target, methodName) {
		return proceed(args).addCallback(function(ps){
			switch (ps.license) {
			case '1':
				var dd = ps.date.split('-');
				ps.description = '(c) ' + dd[0] + ' <a href="' + ps.authorUrl + '">' + ps.author + '</a>'
				+ ' under <a href="http://creativecommons.org/licenses/by-nc-sa/2.0/">CC-BY-NC-SA</a> license.'
				ps.private = false;
				break;
			case '2':
				var dd = ps.date.split('-');
				ps.description = '(c) ' + dd[0] + ' <a href="' + ps.authorUrl + '">' + ps.author + '</a>'
				+ ' under <a href="http://creativecommons.org/licenses/by-nc/2.0/">CC-BY-NC</a> license.'
				ps.private = false;
				break;
			case '3':
				var dd = ps.date.split('-');
				ps.description = '(c) ' + dd[0] + ' <a href="' + ps.authorUrl + '">' + ps.author + '</a>'
				+ ' under <a href="http://creativecommons.org/licenses/by-nc-nd/2.0/">CC-BY-NC-ND</a> license.'
				ps.private = false;
				break;
			case '4':
				var dd = ps.date.split('-');
				ps.description = '(c) ' + dd[0] + ' <a href="' + ps.authorUrl + '">' + ps.author + '</a>'
				+ ' under <a href="http://creativecommons.org/licenses/by/2.0/">CC-BY</a> license.'
				ps.private = false;
				break;
			case '5':
				var dd = ps.date.split('-');
				ps.description = '(c) ' + dd[0] + ' <a href="' + ps.authorUrl + '">' + ps.author + '</a>'
				+ ' under <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a> license.'
				ps.private = false;
				break;
			case '6':
				var dd = ps.date.split('-');
				ps.description = '(c) ' + dd[0] + ' <a href="' + ps.authorUrl + '">' + ps.author + '</a>'
				+ ' under <a href="http://creativecommons.org/licenses/by-nd/2.0/">CC-BY-ND</a> license.'
				ps.private = false;
				break;
			default:
				if (ps.license) {
					ps.description = '(c) <a href="' + ps.authorUrl + '">' + ps.author
					+ '</a> ' + ps.license;
					ps.private = false;
				} else if (ps.type == 'photo') {
					ps.private = true;
				}
				break;
			}
			return ps;
		});
	}
);

})();

Revision 3
FlickrのHTTPS対応。

Revision 4
Flickr, DeviantArt の他に 500px に対応。
DeviantArt と 500px は写真の撮影日がないので Copyright の年が表示できないのが残念です。アップロード日の年を使うのは違う気がします。