The add-on in question will save pages for you to read later with just one click.  When you have the time to check it out, you can access your Read it Later list from any computer or phone. As you save things, it syncs it to your profile on the Read it Later website.

Some of the features of the Firefox add-on include:

• Save pages to a reading list to read when you have time.
• Offline reading mode lets you read the items you’ve saved for later on the plane, train, or anywhere without an internet connection.
• Sync your list to all of your computers, at work or home.
• Sync your list to Read It Later apps for iPhone, iPod, iPad, Android and more.
• After reading, bookmark pages on your preferred bookmarking service or share them with friends.
• Click to Save Mode lets you quickly batch a reading list just by clicking on interesting links.
• Text view strips away images, ads, and layout from articles and presents them in an easy to consume way.

Personally, I have been using Instapaper, for some time, to get this same task done.  However, Read it Later does offer a little more functionality – so I might have to switch my “reading list/bookmark saver” down the road.

You an lean more about the Read it Later service at readitlaterlist.com and you can pick up the Read it Later add-on from the Firefox Add-ons website.

Create a “Read it Later” Folder

The easiest solution to this problem would be to create a special folder in your bookmark toolbar called, “RIL”.  Then each time you are on a web site you want to save for later, drag the URL from the address bar into the special folder you have created.

Use Your Unsorted Bookmarks

Thanks to Firefox 3, we have yet another simple solution to this age old question.  Want to save that link for later?  Just click on the big star located in the address bar.  This will move it to your unsorted bookmarks inside of your bookmarks manager (hit Ctrl+Shift+B to bring it up).  Then later you can decide to keep ‘em or trash ‘em.

Read It Later : the Extension Solution

The Read It Later extension allows you to save pages of interest to read later. It eliminates cluttering of bookmarks with sites that are merely of a one-time interest.

Bookmarklet Help in Instant Paper

This is the method I use the most right now.  Just sign up at InstantPaper.com and then drag the bookmarklet they provide to your bookmarks toolbar.  Find a link you like?  Hit the bookmarklet with your cursor and it will save it to the list you can read later.

Then just go to InstantPaper.com/u to see all your unchecked saved links.

How do you save things to read later? If you have a system that works better than these, please feel free to share!