Would you use an app like Instapaper for everything?

Always when I have an app idea, I write it down, then later if I have time to start implementing, I pick from them. Now I want to try something else: ask your opinion right after the idea was born.

How do you save a HN discussion to read it later? Do you revisit them to act on something interesting you read there? Have you ever felt there is so much music you don't have enough time to listen them all when they reach you on SoundCloud/Mixcloud/Facebook...? How about podcasts?

I imagined an app which is like Instapaper, but for every kind of content including forums, music, podcasts, even GitHub repos to revisit later. It doesn't really save the content, just create a preview like when you share it on Facebook. Then it can showcase these like a fancy bookmark manager.

Has a reminder feature which sends you notification to act on a content in a specific time. Content can be organized with hashtags, indexed so it can be searched.

Has an iOS/Android app and a bookmarklet to save, and a responsive web application to browse.

Would you use it?