Sergey Rozenblat

If you run a blog and a twitter, you sometimes want a reader to read both. Most plugins would give you a widget with your latest tweets. But, I thought it would be nice to have all your thoughts in one place and in one timeline.
So, this plugin automatically posts your tweets to your blog. As your tweets don’t have titles, post format for them is aside. You may want to modify slightly your theme, to allow nice asides without titles.
Posting is done automatically by wordpress built-in cron. You can set it up to run automatically each hour, twice daily or daily. That would depend on how often you blog or tweet.

Tweets Aside

Shows your or someones tweets as an aside posts right in your blog line, not in a widget.

utahta

This plugin inserts social share links at the top or bottom of each post. 
For theme developers, social share links can be added by PHP code or by using shortcode. Check documentation for this use-case.
This plugin documentation can be found <a href="https://github.com/utahta/WP-Social-Bookmarking-Light/wiki" rel="nofollow ugc">here</a>.
This is the list of used social sites:
<ul>
<li>Hatena</li>
<li>Facebook Like Button</li>
<li>Facebook Share Button</li>
<li>Facebook Send Button</li>
<li>Twitter</li>
<li>Tumblr</li>
<li>Google Bookmark</li>
<li>Google +1</li>
<li>Delicious</li>
<li>Digg</li>
<li>reddit</li>
<li>LinkedIn</li>
<li>Instapaper</li>
<li>StumbleUpon</li>
<li>mixi Check</li>
<li>mixi Like</li>
<li>GREE Social Feedback</li>
<li>atode (toread)</li>
<li>LINE</li>
<li>Pocket</li>
<li>Pinterest</li>
</ul>

WP Social Bookmarking Light

This plugin inserts social share links at the top or bottom of each post.

Tweets Aside vs WP Social Bookmarking Light