As soon as you install and activate the Excerpts & Thumbnails add-on, two new sections will appear in the Settings section of WP RSS Aggregator.
The first is called Excerpts. Here’s a look at the available settings:
As it states in it’s description, check this box to enable the excerpt functionality brought in by the Excerpts & Thumbnails add-on.
Excerpts word limit
From here you can set the number of words you want to use for the excerpts that you’re going to display on your site.
These are the characters you want to appear at the end of the excerpt, to indicate that it is in fact an excerpt and there is more text in the original article.
Enable “Read more” link
You can check this box to enable the “Read more” link functionality.
Read more text
From here you can then set the “Read more” text to anything that you’d like.
Enable social buttons
Check this box to add social buttons to every post that’s created.
Twitter: Share via user
Add any text that you’d like to append to the tweet text.