Here are titles and links to several newly posted research papers by Google engineers.

The papers listed below are linked here at (bottom of post):

http://www.resourceshelf.com/2006/07/05/object-level-verticals-and-phlat-personal-searching-demo-from-ms-more-googler-research-papers-available/

My focus was on papers with more of a mainstream interest and available, full text, online, for free. Of course, these and many more are available here:
http://labs.google.com/papers.html

Titles:
+ A Large Scale Study of Wireless Search Behavior: Google Mobile Search

+ An Experimental Study of the Skype Peer-to-Peer VoIP System

+ Names and Similarities on the Web: Fact Extraction in the Fast Lane

+ Organizing and Searching the World Wide Web of Facts – Step One: the One-Million Fact Extraction Challenge

+ Sender Reputation in a Large Webmail Service

+ Limits to Anti Phishing

+ Retroactive Answering of Search Queries

+ Social- and Interactive-Television Applications Based on Real-Time *mbient-Audio Identification

+ Large Scale Image-Based Adult-Content Filtering

+ Using Encyclopedic Knowledge for Named Entity Disambiguation