Well, snipping the trailing part off the first link reveals that
http://www.radiationnetwork.com/ is alive and kicking. I'm a big fan of online measurements. I can't vouch for the reliability of this service, though.
The USSR government did not bother to warn anyone in the outside world about the Tsjernobyl accident before Sweden found increased radiation levels close to one of the Swedish reactors. Reliable access to fresh data is good.
Most likely, the Japanese government could calm things considerably by posting online radiation levels along with explanations about what those numbers really mean. Radiation comes from a huge range of processes and materials, and it is far from trivial to convert those numbers into the answer everyone wants: What impact will this have for me and my loved ones?