Changed do_not_track setting to respectfully_social. Added a better description to the config file. Also, now social icons are sprited for bandwidth friendliness

.themes/classic/sass/partials/_sharing.scss

@@ -1,22 +1,47 @@
-@mixin social-button-bg($img, $color: #444) {
+@import "icon/*.png";/**/
+@include all-icon-sprites($dimensions: true);
+
+@mixin social-button-bg($icon: false, $color: #333, $img: false) {
   color: $color;
   &:visited, &:hover, &:visited:hover { color: $color; }
-  position: relative;
-  padding-left: image-width($img) + 6px;
-  &:before {
-    content: "";
-    background: image-url($img) no-repeat center center;
-    width: image-width($img);
-    height: image-height($img);
-    display: inline-block;
-    position: absolute; left: 3px;
-    top: 3px;
+  @if $img {
+    padding-left: image-width($img) + 6px;
+    &:before {
+      background: image-url($img) no-repeat center center;
+      width: image-width($img);
+      height: image-height($img);
+      position: absolute; left: 3px;
+      top: 3px;
+    }
+  } @else if $icon {
+    padding-left: icon-sprite-width($icon) + 6px;
+    &:before {
+      vertical-align: middle;
+      @extend .icon-#{$icon};
+      position: absolute; left: 3px;
+      top: 3px;
+    }
   }
 }
 
+@mixin icon-bg($icon, $align: middle) {
+  display: inline-block;
+  vertical-align: $align;
+  @extend .icon-#{$icon};
+}
+
 .simple-social-button {
+  position: relative;
+  overflow: hidden;
+  font-family: "Lucida Grande", Helvetica, Arial, sans;
   display: inline-block;
   border: 1px solid #ccc;
+  padding: .2em .5em; line-height: 1.45em;
+  font-size: 11px;
+  font-weight: bold;
+  text-decoration: none;
+  text-shadow: #fff 0 1px;
+  @include border-radius(.3em);
   background-color: #e5e5e5;
   @include background-image(linear-gradient(#fff, #ddd));
   &:hover {
@@ -24,12 +49,10 @@
     border-color: #b5b5b5;
     background-color: #ddd;
   }
-  padding: .2em .5em .1em; line-height: 1.45em;
-  font-size: 13px;
-  font-weight: bold;
-  text-decoration: none;
-  text-shadow: #fff 0 1px;
-  @include border-radius(.3em);
+  &:before {
+    content: "";
+    display: inline-block;
+  }
 }
 
 .sharing {
@@ -43,13 +66,13 @@
 
 .googleplus-share {
   @extend .simple-social-button;
-  @include social-button-bg('googleplus.png', #db583b);
+  @include social-button-bg('googleplus', #db583b);
 }
 .facebook-share {
   @extend .simple-social-button;
-  @include social-button-bg('facebook.png', #4e5a9b);
+  @include social-button-bg('facebook', #4e5a9b);
 }
 .twitter-share, .sidebar a.twitter-follow-button {
   @extend .simple-social-button;
-  @include social-button-bg('twitter.png');
+  @include social-button-bg('twitter');
 }

.themes/classic/source/_includes/after_footer.html

@@ -1,7 +1,7 @@
 {% include disqus.html %}
-{% unless site.do_not_track %}
-{% include facebook_like.html %}
-{% include google_plus_one.html %}
-{% include twitter_sharing.html %}
+{% unless site.respectfully_social %}
+  {% include facebook_like.html %}
+  {% include google_plus_one.html %}
+  {% include twitter_sharing.html %}
 {% endunless %}
 {% include custom/after_footer.html %}

.themes/classic/source/_includes/post/sharing.html

@@ -1,20 +1,20 @@
 <div class="sharing">
   {% if site.twitter_tweet_button %}
-    {% if site.do_not_track %}
+    {% if site.respectfully_social %}
       <a href="http://twitter.com/share" title="Tweet this" class="twitter-share" target="_blank">Tweet</a>
     {% else %}
-      <a href="http://twitter.com/share" title="Tweet this" class="twitter-share-button twitter-share" data-url="{{ site.url }}{{ page.url }}" data-via="{{ site.twitter_user }}" data-counturl="{{ site.url }}{{ page.url }}" target="_blank" >Tweet</a>
+      <a href="http://twitter.com/share" title="Tweet this" class="twitter-share-button" data-url="{{ site.url }}{{ page.url }}" data-via="{{ site.twitter_user }}" data-counturl="{{ site.url }}{{ page.url }}" target="_blank" >Tweet</a>
     {% endif %}
   {% endif %}
   {% if site.google_plus_one %}
-    {% if site.do_not_track %}
+    {% if site.respectfully_social %}
       <a title="+1 on Google Plus" class="googleplus-share" href="https://plusone.google.com/_/+1/confirm?hl=en&url={{site.url}}{{page.url}}" target="_blank">+1</a>
     {% else %}
       <div class="g-plusone" data-size="{{ site.google_plus_one_size }}"></div>
     {% endif %}
   {% endif %}
   {% if site.facebook_like %}
-    {% if site.do_not_track %}
+    {% if site.respectfully_social %}
     <a title="Share on Facebook" class="facebook-share" href="http://www.facebook.com/sharer.php?u={{site.url}}{{page.url}}" target="_blank">Share</a>
     {% else %}
       <div class="fb-like" data-send="true" data-width="450" data-show-faces="false"></div>

_config.yml

@@ -65,8 +65,9 @@ default_asides: [asides/recent_posts.html, asides/github.html, asides/twitter.ht
 #   3rd Party Settings    #
 # ----------------------- #
 
-# Use text links instead of Javascript widgets for Twitter, Facebook and Google Plus
-do_not_track: false
+# Javascript social buttons often generate lots of http requests and may track viewers browsing history
+# Show respect for privacy and bandwidth with simple links for Twitter, Facebook and Google Plus.
+respectfully_social: true
 
 # Github repositories
 github_user:

config.rb

@@ -4,6 +4,7 @@ project_type = :stand_alone
 # Publishing paths
 http_path = "/"
 http_images_path = "/images"
+http_generated_images_path = "/images"
 http_fonts_path = "/fonts"
 css_dir = "public/stylesheets"
 
@@ -11,6 +12,7 @@ css_dir = "public/stylesheets"
 sass_dir = "sass"
 images_dir = "source/images"
 fonts_dir = "source/fonts"
+generated_images_dir = "source/images"
 
 line_comments = false
 output_style = :compressed