http://surveill.dei.uc.pt/surveill/index.php

Surveill@Home is a research project that uses Internet-connected computers to conduct end-to-end fine-grained monitoring of web sites. The aim of the project is to deploy a large infrastructure to support thousands of probes monitoring the Internet.
Each probe repeatedly performs a pre-defined set of web transactions on web-sites, accessing each site about 4 times per hour.
The proposed approach allows us to obtain important results on end-user visible failures and performance statics, from several thousands view points spread throughout the Internet.
With the help of the volunteer community we will achieve this ambitious goal.
We are welcoming BOINC users who want to participate in our initial monitoring effort.
This is a "non-CPU" intensive project.