I've been playing around with Google's Mashup Editor, trying to see if it is a reasonable tool for business mashers. It didn't take me long to know the answer: No, it isn't.
Is Mashup Editor any better than than browser-side mashing? In some ways yes, in many ways no. Google allows mashers to deploy mashups to Google's server, which is definitely an improvement for business mashers. Deploying to the cloud is likely the only way a business analyst will get his or her mashup published. IT isn't going to be able to spend time deploying mashups to internal servers. Certainly not when the mashups will probably need to be deployed several times before they are 'right.'
So Google is definitely on the right track, but Mashup Editor is still for developers, not for business mashers. Mashup Editor requires mashers to write code. It doesn't matter that the 'code' is in the form of an XML document. It is still code. For me it is a great tool because I can include feeds as easily as maps within the mashup. No more jumping between Yahoo pipes and Google Maps. I can also use existing HTML, including style sheets, and add data and map elements from Google's expanded tag list.
If you want to combine visual and data elements in a mashup, you are comfortable with HTML, style sheets and XML tags and you don't care about process, go ahead and use Mashup Editor.
Is it a tool for business mashers?