MicrostockGroup

The other day I saw a portfolio consisting exclusively of cartoons depicting social and political commentary. I guess if there's a market for it and it sells well, why not?

It is rather unusal though, but who knows, maybe it's one of the few open niches left within microstock.

No, they were not single characters isolated on white background, if that is what you mean. I know there's plenty of them on micro...

The ones I meant were "single image scenes". Not strips with multiple images, like the one above...but nevertheless mostly two or more characters, often which speech bubbles, depicting a certain situation.

Kinda like this one: http://politicalhumor.about.com/od/democrats/ig/Anthony-Weiner-Cartoons/Weiner-s-Little-Fella.htm

I'll post a link to the actual portfolio, if I can find it...

I see what you mean. What stood out with the portfolio I saw was that it seemed so odd the entire portfolio was solely focused on political and social commentary, it was hard for me to imagine where they could be used, other than on an editorial blog, website or newspaper that is about politics e.g. while the examples you posted could have a much wider range of possible uses.

If I remember right, this portfolio seemed to do rather well, to my surprise (looking at the D/L numbers), so it may well be a good niche someone has found.

I think it's not the same duck from the cartoon movies, but there is a resemblance.

Can one buy all the series of his cartoons and publish as a book, with a regular license?

I don't know they would use them to publish a book. You'd have to have a story line and I don't think one page would quite do it. I could see them being used in newspaper's in the comic section.