I know there was quite a bit of interest in this, and it's one of the most popular posts on my blog. So, I thought rather than update my post I'd start a new one with links to review/articles about the whole Toki Pona experience!
Memrise blog - Lessons from two days of Toki Pona (lots of videos as well)
Guardian - What happened when I tried to learn Toki Pona in 48 hours using memes
Actual Fluency - Tokiponathon
My original post - Toki Pona in 48 hours
Will add others as I find them.