The startup that I'm at is working in a similar space. We're devoting a lot of resources to being able to easily search (from Google) your links, as well as share them. May be useful if you used Kippt, https://www.kifi.com/
Disclaimer: Again, I work there, but I really like what we are building. :)
Back in 2007, I built a "social search" Web app called CoReap, based on a similar concept. Unfortunately, I couldn't run it for long (and eventually pulled the plug) due to infrastructure issues. You can read about at http://coreap.wordpress.com
Best wishes to you guys! Drop me a message if you have any questions or need any help.
Hear you loud and clear. We're working on a strategy so that it's not needed. Right now, that information is used only to determine if you or a friend has kept a page, or if you have previous conversations on the page.
Unfortunately, that would often break. We've put a lot of effort into URL normalization (ie, http://smile.amazon.com/TP-Link-TL-WA701ND-150Mbps-Wireless-... is the same as http://www.amazon.com/dp/B002YETVVE/). When we can do "good enough" on the client so we can provide the same benefits, we'll do it. Or: provide a setting that forces URLs to exactly match, and we can use a bloom filter to keep traffic down.
This is really awesome! Something i've long been surprised that Google hasn't done yet - especially since i was a very avid Google Bookmarks user for a long time.
The startup that I'm at is working in a similar space. We're devoting a lot of resources to being able to easily search (from Google) your links, as well as share them. May be useful if you used Kippt, https://www.kifi.com/
Disclaimer: Again, I work there, but I really like what we are building. :)