+ Trim Posts: when you browser the results of graph search, browser will load more and more posts data. Then, it will consume more and more memory of RAM and CPU. => Crash.
The tool will help you free memory, and just keep some last posts. So, you can browse to the end of results.
+ Smart Ads Finder: It will hide non-ads posts on your new feeds. So you can use it to spy ads of your competitors.