Just an update to let you know that last weekend we update Nimbits to version 3.0.10. You can download a new version of the java and .net SDK that lets you record arduino data to the cloud.
Nimbits is a free, open source cloud computing based data logger that Arduino based devices can use to record data into online data points on the cloud. It provides alerts, calculations, storage, relay etc.
You can use the public server on www.nimbits.com
or download and install your own instance. The new version has some cool instant messenger features where you can chat with your data over IM.
Check it out, and let me know if you have any questions. I posted a tutorial on how to post data using an ethernet shield directly out to the cloud without needing a middle tier to relay the data here on my blog: http://nimbits.blogspot.com/2010/11/data-in-connect-arduino-to-cloud.html