How we built an Annotation server that can anchor to changing text in external web documents

Hey all, I wrote this recently as a technical blog post explaining some of
the challenges we faced when building our new Annotations product at
Livefyre. I thought some of you may find it interesting,

http://blog.livefyre.com/architecting-sidenotes/

Let me know if you have feedback or questions. We're really excited about
what the product will mean to increase the spread of Annotations to our
customers like big brands and publishers. And I'm exited to be more open on
this mailing list about the challenges we faced building it, and what
standards could exist to make it easier or more valuable.
--
Benjamin Goering - @bengo
Platform @Livefyre Labs