I looked at Google Reader's source code and found an interesting piece of information:

---
   <li id="contacts-drawer" class="hidden"><a href="">Other people's lists</a></li>
---

and

---
   <div id="contacts-drawer-contents" class="box drawer-contents hidden">
   <div class="bi">
   <div class="bt">
   <div></div>
   </div>
   <div class="bc"> You can browse through other people's reading lists. </div>
   <div class="bb">
   <div></div>
   </div>
   </div>
---

Looks like Google is gonna introduce reading of other people's lists.

I posted a bookmarklet in the forum 15 days ago for displaying this.

blogoscoped.com/forum/11152.ht ...

2Brian: Sorry, I only started reading forum today and I didn't read previous posts.