Yeah, you can add adsense in the articles you write. But we have to write a long and informative article so that it gets ranked higher in search results and gets lot of traffic.
Since the beggining of knol you can put adsense code in it, right? Could swear i saw that option since day one...
It's Google way to create millions of new webpage with duplicate contents and adsense on top of it. Why people say it a wikipedia replacement? It does not even understand the use of Wikipedia. Think it a new Squidoo.
I haven't actually started using Knol yet but the answer which I found is that they do allow adsense to be incorporated to Knol.
I might switch over to writing "knols" soon as long as they don't mind affiliate links, been using Squidoo for some time and it would be nice to get 100% of the AdSense revenue from it.