Did this last year, and most of them rooted - the green tomatoes ripened, and I hand pollinated the flowers and got quite a few new tomatoes grown indoors.
I read about that technique a couple days ago and decided to give it a try. Do you use a rooting hormone or just put them in dirt?
I have never used rooting hormones, but I did buy some to use. I just forget to use it usually, but sometimes I am just too lazy LOL.