Shane Gowland

This plugin adds support for Topic Thumbnails with bbPress. It works by retrieving the first image from each topic and displaying it alongside the topic title on the index page. Thumbnails are sized according to the default ‘thumbnail’ size in your WordPress media settings. The images will also resize appropriately if you’re using a responsive WordPress theme.
This plugin works with GD bbPress Attachments and most other bbPress image management plugins.
If you enable this plugin while bbPress is disabled (or not installed) it will display a warning message.

bbPress Topic Thumbnails

Provides bbPress with support for topic thumbnails.

tranchesdunet

My Trending Post is a plugin which search for Trending Topics on Twitter every hour. It then compare the Trending Topics with 
your post’s blog and send a tweet with a link to your post if it match with the topic.
Features:
<ul>
<li>An automatic tweet from a user defined twitter account, with a link related to one of your blog’s post and the World trending topic (the plugin will check for Trending Topics every hours)</li>
<li>An hashtag will be added after the link, with the matched’s topic</li>
<li>A smart algorithm to separate concatenated camel words (e.g. #10FavouriteBands ==> 10 Favourite Bands) and so increase the matching between yours posts and the trending topics (often concatenated)</li>
<li>The post sent will be flagged and so won’t be sent again until 7 days</li>
<li>The possibility of excluding one or more categories of article to be tweeted (Now available in the Lite version)</li>
</ul>
Additionaly, if you get the Full Version, you will have:
<ul>
<li>The Zone choice between World and any other countries covered by Twitter Trending Topics</li>
<li>The possibility of enabling/disabling the sending of the tweets</li>
<li>The possibility of enabling/disabling the sending of an email for each tweet sent (with email address and title settings)</li>
<li>The possibility of adding a text before the link in the tweet (like hashtag or everything else)</li>
<li>The possibility of adding a text after the link in the tweet (like hashtag or everything else)</li>
<li>The possibility to use an url shortener in your tweets (tinyurl or Bit.ly) to prevent exceeding the 140char limit of Twitter</li>
<li>The choice of a delay before retweeting the same article</li>
<li>The possibility of excluding one or more categories of article to be tweeted</li>
</ul>
Note on the support: 
For better support, I will only answer question/suggestion/etc through a dedicaced page on my website : www.tranchesdunet.com/my-trending-post 
You can post either in english or french (preferably).
Disclaimer: 
This plugin use the Twitter API as it is free. I will not be responsible if the Twitter API become unfree and so, bring to an end of working.
Feel free to test it and report any bugs/suggestions
Be sure to check out my other plugin:
<ul>
<li><a href="https://wordpress.org/extend/plugins/sidenails/" rel="ugc">SideNails</a></li>
<li><a href="https://wordpress.org/extend/plugins/hotlink2watermark/" rel="ugc">Hotlink2Watermark</a></li>
</ul>

My Trending Post

Automatically searches the Trending Topic on Twitter and send a tweet with a link to an article related in your blog

bbPress Topic Thumbnails vs My Trending Post