All valid points, I do want to add that:

(1) Grid is a hype machine used by IBM to drive utility computing. I've been to the meetings at IBM, I know it. They change buzzwords every 2 years, this 2-year cycle is using the word "grid". Before this it was "self healing computing". (2) Aforementioned examples of advertising cool things are non-commercial in nature. (3) Developer works is a "hooray for me!" type of web site that folks write for. A lot of it is generated by IBM employees to hype their own products -- i.e. WebSphere, IBM Grid projects, etc. I think a lot of the other news here is generally given for help of the community, not for glory of IBM.