http://www.zapreader.com/reader/index.php
Some older discussion on this is here:
http://news.ycombinator.com/item?id=156464
javascript:var%20sel%20=%20window.getSelection?%20window.getSelection()%20:%20document.getSelection?%20document.getSelection()%20:%20document.selection.createRange().text;%20sel%20+=%20'';sel%20=%20sel.replace(/'/g,'&'%20+%20'apos;');newdoc%20=%20open().document;newdoc.write(%22<BODY><FORM%20ACTION='http://www.spreeder.com/'%20METHOD='POST'><INPUT%20T...);newdoc.forms[0].submit();
(Edit: Might be better to get the link from here - http://spreeder.com/bookmarklet.php )
http://www.zapreader.com/reader/index.php
Some older discussion on this is here:
http://news.ycombinator.com/item?id=156464