I stopped doing this when my count of saved articles topped 1200! I collected the titles in a notepad file on my iPad then imported them into an Excel file. At the same time, I deleted them from the reading list. I sorted the titles and removed the duplicates. I created a column for a code to indicate the topic. I'll then sort these into sheets based on topics.

This is an ongoing process. Meanwhile, I don't save anything to my reading lis t. Now, when I see a title that I'd like to read, I save just the title to a Notepad file. I keep a separate file for articles I've read and plan to respond to. At this rate, it will be YEARS before I catch up!