500px.user.js

// ==UserScript==
// @name       500px graber
// @namespace  http://500px.com/
// @description  grab photo exif info
// @include http://500px.com/*
// @copyright  2012+, You
// ==/UserScript==

// a function that loads jQuery and calls a callback function when jQuery has finished loading
function addJQuery(callback) {
  var script = document.createElement("script");
  script.setAttribute("src", "http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
  script.addEventListener('load', function() {
    var script = document.createElement("script");
    script.textContent = "(" + callback.toString() + ")();";
    document.body.appendChild(script);
  }, false);
  document.body.appendChild(script);
}

// the guts of this userscript
function main() {
    page_source = window.location;
    photo_source = $('#thephoto a img').attr('src');
    model = $('#photo-information li.camera strong').text();
    focal_length = $('#photo-information li.focal-length strong').text().slice(0, -2);
    shutter_speed = $('#photo-information li.shutter-speed strong').text().slice(0, -4);
    aperture = $('#photo-information li.aperture strong').text().slice(2);
    iso = $('#photo-information li.iso strong').text();
    lens = $('#photo-information li.lens strong').text();

    $('#sidebar').prepend('<a class="button" style="display:inline-block; margin-bottom:20px" href="http://wuditoo.com/photo/upload?page_source='+page_source+'&photo_source='+photo_source+'&model='+model+'&focal_length='+focal_length+'&shutter_speed='+shutter_speed+'&aperture='+aperture+'&iso='+iso+'&lens='+lens+'">grab it</a>');
}

// load jQuery and execute the main function
addJQuery(main);

flickr.user.js

// ==UserScript==
// @name       flickr graber
// @namespace  http://www.flickr.com/
// @description  grab photo exif info
// @include http://www.flickr.com/*
// @copyright  2012+, You
// ==/UserScript==

// a function that loads jQuery and calls a callback function when jQuery has finished loading
function addJQuery(callback) {
  var script = document.createElement("script");
  script.setAttribute("src", "http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
  script.addEventListener('load', function() {
    var script = document.createElement("script");
    script.textContent = "(" + callback.toString() + ")();";
    document.body.appendChild(script);
  }, false);
  document.body.appendChild(script);
}

// the guts of this userscript
function main() {
    page_source = window.location.href;
	photo_source = '';
	if($('#share-options-embed-textarea-l-bbcode').text().match(/\[img\](.*)\[\/img\]/)) {
		photo_source = $('#share-options-embed-textarea-l-bbcode').text().match(/\[img\](.*)\[\/img\]/)[1];
	} else {
		photo_id = page_source.split('/')[5];
		$.getJSON('http://api.flickr.com/services/rest/?method=flickr.photos.getSizes&api_key=44f0e57ea2387f8f6d0c20e658ab3b88&photo_id='+photo_id+'&format=json&nojsoncallback=1', function(data){
				$.each(data.sizes.size, function(key, val){
					if (val.label == 'Large') {
						photo_source = val.source;
						return false;
					}
					if (val.label == 'Medium 640') {
						photo_source = val.source;
					}
				});
				origin_href = $('#graber').attr('href')
				$('#graber').attr('href', origin_href+'&photo_source='+photo_source);
		})
	}
    model = '';
    focal_length = '';
    shutter_speed = '';
    aperture = '';
    iso = '';
    lens = '';

	$meta_link = $('#options-menu .option-meta');
	if($meta_link.length) {
		meta_link = $meta_link.attr('href');
		$('#sidebar').append('<div id="exif" style="display:none"></div>');
		$('#exif').load(meta_link + ' .photo-data', function(){
			model = $('#exif th:contains("Camera")').parent().find('td a').text();
			shutter_speed = $('#exif th:contains("Exposure")').parent().find('td').eq(0).text().split('(');
			if (shutter_speed.length > 1) {
				shutter_speed = shutter_speed[1].slice(0, -1);
			} else {
				shutter_speed = shutter_speed[0].split(' ')[0];
			}
			aperture = $('#exif th:contains("Aperture")').parent().find('td').eq(0).text().slice(2);
			focal_length = $('#exif th:contains("Focal Length")').parent().find('td').eq(0).text().slice(0, -3);
			iso = $('#exif th:contains("ISO Speed")').parent().find('td').eq(0).text();
			lens = $('#exif th:contains("Lens")').eq(0).parent().find('td').eq(0).text();
			$('#sidebar').prepend('<a class="button" style="display:inline-block; margin-bottom:20px" href="http://wuditoo.com/photo/upload?page_source='+page_source+'&photo_source='+photo_source+'&model='+model+'&focal_length='+focal_length+'&shutter_speed='+shutter_speed+'&aperture='+aperture+'&iso='+iso+'&lens='+lens+'">grab it</a>');
		})
	} else {
		$('#sidebar').prepend('<a id="graber" class="button" style="display:inline-block; margin-bottom:20px" href="http://wuditoo.com/photo/upload?page_source='+page_source+'&photo_source='+photo_source+'&model='+model+'&focal_length='+focal_length+'&shutter_speed='+shutter_speed+'&aperture='+aperture+'&iso='+iso+'&lens='+lens+'">grab it</a>');
	}

}

// load jQuery and execute the main function
addJQuery(main);