how can widgets change the picture

First there was Html, well not first but very fast.
Then came web 2.0, well not just after but soon enough.
what's next? widgets?
instead of getting data/service at a specific place, we want it everywhere.

lets take a look a the big names of web 2.0 so far:

• flickr: bring on your pics and spread them everywhere.
• YouTube: bring on your clips and spread them everywhere.
• myspace: where people bring their stuff on.