Hi Jon, Yes it is very much a sister site. I joined it last year and found it very interesting and friendly. The only problem is that the posts are in very colloquial French and I found it hard going. I must say that I haven't contributed for a long time, and initially felt guilty because the administrators were so kind that they kept emailing me to make sure I was OK!
"Outside of a dog, a book is man's best friend. (Inside of a dog, it's too dark to read.)" Groucho Marx