で、複雑なのはCopyURL+を使うので

FIREFOX

変更分：ただしGoogleToolbarのRSS部分はそのまま。
どうやら%EOL%で改行コード、%LOCAL_TIME%でローカルの現在時間、%LINK_HTMLIFIED% のように後ろに_HTMLIFIEDを付けるとURLエンコードするという機能もありました。
AmazonはCopy URL+にソースが載ってたので、試しに追加

user_pref("copyurlplus.menus.1.label", "タイトルをコピー");
user_pref("copyurlplus.menus.1.copy", "%TITLE%");
user_pref("copyurlplus.menus.2.label", "選択文字でHTMLリンクを作成");
user_pref("copyurlplus.menus.2.copy", "<a href=¥"%URL%¥" title=¥"%TITLE%¥">%SEL%</a>");
user_pref("copyurlplus.menus.3.label", "記事をを引用する");
user_pref("copyurlplus.menus.3.copy", "<cite><a href=¥"%URL%¥" title=¥"%TITLE%¥">%TITLE%</a>から%LOCAL_TIME%に引用</cite><br />%EOL%<blockquote cite=¥"%URL%¥" title=¥"%TITLE%から%LOCAL_TIME%に引用¥">%SEL%</blockquote>");
user_pref("copyurlplus.menus.4.label","サムネイルでサイトを引用");
user_pref("copyurlplus.menus.4.copy","<a href=¥"%URL%¥" title=¥"%TITLE%¥" target=¥"_blank¥"><strong>%TITLE%</strong></a><br />%EOL%<a href=¥"%URL%¥" title=¥"%TITLE%¥" target=¥"_blank¥"><img src=¥"http://img.simpleapi.net/small/%URL%¥" alt=¥"%TITLE%¥" width=¥"128¥" height=¥"128¥" hspace=¥"4¥" vspace=¥"4¥" border=¥"0¥" /></a>");
user_pref("copyurlplus.menus.5.label", "Amazon Thumbnail");
user_pref("copyurlplus.menus.5.copy", "<a href=¥"http://www.amazon.com/exec/obidos/ASIN/%SEL%/oraora-20¥" "+"title=¥"%TITLE%¥"><img src=¥"http://images.amazon.com/images/P/%SEL%.01.THUMBZZZ.jpg¥" "+"alt=¥"%TITLE%¥" title=¥"%TITLE%¥" /></a>");
user_pref("google.toolbar.subscribe.aggregators.LiveBookmarks.desc", "登録情報を Firefox ライブ ブックマークで読む");
user_pref("google.toolbar.subscribe.aggregators.LiveBookmarks.id", "LiveBookmarks");
user_pref("google.toolbar.subscribe.aggregators.LiveBookmarks.order", "0");
user_pref("google.toolbar.subscribe.aggregators.LiveBookmarks.title", "Firefox ライブ ブックマーク");
user_pref("google.toolbar.subscribe.aggregators.LiveBookmarks.url", "LiveBookmarksUrl");
user_pref("google.toolbar.subscribe.aggregators.hatenarss.desc", "はてな RSS");
user_pref("google.toolbar.subscribe.aggregators.hatenarss.id", "hatenarss");
user_pref("google.toolbar.subscribe.aggregators.hatenarss.order", "1");
user_pref("google.toolbar.subscribe.aggregators.hatenarss.title", "はてな RSS");
user_pref("google.toolbar.subscribe.aggregators.hatenarss.url", "http://r.hatena.ne.jp/append/%feed%");
user_pref("google.toolbar.subscribe.aggregators.livedoor.desc", "livedoor Reader");
user_pref("google.toolbar.subscribe.aggregators.livedoor.id", "livedoor");
user_pref("google.toolbar.subscribe.aggregators.livedoor.order", "2");
user_pref("google.toolbar.subscribe.aggregators.livedoor.title", "livedoor Reader");
user_pref("google.toolbar.subscribe.aggregators.livedoor.url", "http://reader.livedoor.com/subscribe/%feed%");
user_pref("google.toolbar.subscribe.aggregators.bloglines.desc", "Personal page loaded with the freshest news about the things you love");
user_pref("google.toolbar.subscribe.aggregators.bloglines.id", "bloglines");
user_pref("google.toolbar.subscribe.aggregators.bloglines.order", "3");
user_pref("google.toolbar.subscribe.aggregators.bloglines.title", "Bloglines");
user_pref("google.toolbar.subscribe.aggregators.bloglines.url", "http://www.bloglines.com/sub/%feed%");
user_pref("google.toolbar.subscribe.aggregators.googlereader.desc", "Google Reader");
user_pref("google.toolbar.subscribe.aggregators.googlereader.id", "googlereader");
user_pref("google.toolbar.subscribe.aggregators.googlereader.order", "4");
user_pref("google.toolbar.subscribe.aggregators.googlereader.title", "Google Reader");
user_pref("google.toolbar.subscribe.aggregators.googlereader.url", "http://www.google.com/reader/view/feed%2F%feed%");
user_pref("google.toolbar.subscribe.aggregators.myyahoojp.desc", "My Yahoo! Japan");
user_pref("google.toolbar.subscribe.aggregators.myyahoojp.id", "myyahoojp");
user_pref("google.toolbar.subscribe.aggregators.myyahoojp.order", "5");
user_pref("google.toolbar.subscribe.aggregators.myyahoojp.title", "My Yahoo! Japan");
user_pref("google.toolbar.subscribe.aggregators.myyahoojp.url", "http://e.my.yahoo.co.jp/config/jp_promo_content?.module=jp_rss&.url=%feed%");