Key features

Add RSS feeds with custom periodically check ups for new or changed content.
Set maximum age of news to display, ranging from 0-120 days, where 0 means infinite
Input keywords or buzzwords to match for in the RSS feeds.
Get a quick overview of feed content, ordered by keywords.
Have a headline only mode to show only headlines of feeds by single click
Get a a complete feed overview using "View feeds".
Works completely in the sidebar.
Add keywords by selection page content or links and Add new keyword from within the context menu
Show notifications and status of feeds being updated
Export and import settings, article data and keywords forth and back
Options to disable picture feed display, switch animations on and off and notification display on/off.
Context menu items to hide/show thunderNote instead of the keyboard shortcut, also available using a browser toolbar icon
Highlight keywords found in opened articles if opened from a keyword link
Context menu Option to hide/show highlights on the page
Single reader mode allowing to show one article per keyword or feed a time. Shortcut Arrow left/right and, in single reader mode left and right arrow, to quickly navigate through news items

A video showing thunderNote in action:
Note: this is slightly outdated, but showcases the basics of thunderNote.

https://dwrox.net/demo.webm