Citeseer

Citeseer is, hands-down, one of the best services on the World Wide Web. I've noticed that the shift from citeseer.nj.nec.com to citeseer.ist.psu.edu hasn't been going well. The server is down today, and from other traffic on the Web, it's been down in the recent past. I'm sure the servers are kept busy from all the hits from researchers. I sure hope Penn State restores a service that many of us in the research community find invaluable....