Blogs: Footnotes

There is an article over at Darwinian Web called Nativetext: Delivering RSS feeds to the rest of the world which refers to an idea outlined at Nativetext, translating RSS-Feeds.
I like the idea, but, being a part-time translator myself, I have to admit, that I'm somewhat skeptical. Doing a quality translation not only takes time, but a good understanding about the cultural differences to create a meaningful result. The need of understanding the differences may vary in regard to books, but the more successful blogs usually use all kinds of puns and wordplays that don't translate that easy. Means, a five word punch-line might require a two paragraph explanation for readers not familiar with the underlying assumption and might bore another set of readers into switching websites, because they are familiar with the underpinnings that make the pun work. When doing translations myself, I take the easy, some might call it cheesy, way out: footnotes.
No flames please, I'm aware that the use of footnotes divides the writing community into two factions, fighting over the feasibility of the use of them. I might be influenced by books like Jonathan Stroud's Bartimaeus Trilogy or Susanna Clarke's Jonathan Strange & Mr. Norrell, granted, but they work for me. Here comes the problem, there is no blogging software with a decent way to create footnotes, I could not find one, at least. On the other hand, how could footnotes be incorporated into RSS? RSS is supposed to be kind of a streamlined way of distributing information, and this implies no footnotes, just the facts.
Time will tell if there is a way to overcome this dilemma. If you should know about any approaches to incorporate footnotes in blogs in a feasible way, the e-mail is at the bottom of the blog, thanks in advance.