You are talking about AGPL here - this is the only GPL version that makes you open almost everything that handled whatever AGPL program produced. I know of one project with that license, and it stopped me from using it (I couldn't relicense the application it would be used for, and personally I see it as a step too far... I think it should have some restrictions as to what it affects, so i would have to open my changes to the AGPLd part but not much more)