The ShareThis plugin for ExpressionEngine is an adaption of the famous Wordpress Plugin by Alex King. Th plugin is based on the digg this plugin from Vik Rubenfeld. and can be used in an "light" and in an "advanced" mode. The "light" mode is without the email functionality. If you have the tell-a-friend module installed you can use the plugin in the advanced mode, which enables the email tab in the layer.
entry_id
ID for the blog entry.
link_title
Title text for the Link to open up the layer. Default is "Share This!"
title
Title text for the syndication links. If no title is given it will be fetched from the
database.
bodytext
Some services allow the submission of short abstracts. This paramater can
be used to set the abstract, otherwise it will be fetched from database from
the body field. All values will be cut after 255 characters.
url
The url parameter is used to set the url for the full text article or permalink.
This parameter should be set, when the plugin is used on index pages, otherwise
the index page url will be fetched from database.
orientation
This parameter allowes you to control where to display the layer [top|bottom].
exclude
By default all available syndication options will be displayed. This
option allows you to exclude the options you don't like to have to be
displayed. You can exclude multiple options in a comma separated list.
Option Overview:
delicious, digg, furl, netscape, yahoo, technorati, google, newsvine, blinklist
reddit, blogmarks, magnolia, live, tailrank, mister wong, stumbleupon
Basic
{exp:share_this entry_id="{entry_id}" url="{title_permalink={my_journal_group}/comments}"}
Advanced
{exp:share_this entry_id="{entry_id}" title="{title}" url="{title_permalink={my_journal_group}/comments}" link_title="Share this!" bodytext="This is an article about plugins" orientation="top"}
Full
{exp:share_this url="{title_permalink={my_journal_group}/comments}" title="{title}" entry_id="{ entry_id}" orientation="top"}
{exp:email:tell_a_friend charset="utf-8" allow_html='n'}
tell-a-friend form
{/exp:email:tell_a_friend}
{/exp:share_this}
Expression Engine 1.5.2. is required in order to run that plugin.
Some people tried to include the Share This! Plugin within the index templates of their sites and wondered why the tell-a-friend form wasn't showing up at all. This is due to the fact, that all forms including the comment form are only available in the pages where the url_title or the entry_id is given.
Here is the answer I got from Derek Jones (after stupidly asking without searching the
documentation for any help):
This information actually is in the documentation in quite a few places, referring either to having an entry_id or url_title in the URL, or needing to be placed on a “single-entry” templates, which it explains, are pages that are linked to with an entry_id or url_title in the URL.