Unload posts that have been scrolled out
It looks like google reader unloads posts that the user have scrolled out. This helps to maintain low memory usage and stops any running audio/video embeds. We should try to do this as well.

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Isaac Witmer commented
I wrote this bookmarklet that would delete read content:
go here: https://isaaclw.github.io/bookmarklets/theoldreader/install.htmlAnd drag it to your address bar. Then click it when you want to clear large feeds where most of the entries are read.
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Isaac Witmer commented
Especially evident when I started subscribing to youtube channels. the html5 player stays in the background.
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Ibrahim Yusuf commented
after going through more than one hundred post the page used more than 1100MB of memory, it's way too much
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Chris Kasprzak commented
I definitely need this as I have tons of feeds that cause TOR to slow down and freeze for me.
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Sergei Mozhaisky commented
On some feeds The Old Reader uses too much memory. For example, try http://interesniy-kiev.livejournal.com/data/rss. When I'm just opening list of items, Firefox's memory usage jumps to 2Gb.
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Eduardo Miranda commented
One intermediary step could be:
- when scrolling calls the event to load more items, remove some(1) of previously read/loaded items or all of them and keep only those new/unread .1- if I counted it correctly, there are 30 posts per load, so the mechanism would load the new 30 and some here could mean the last 5 or 10 posts from previous load.