Very interesting. I hadn't heard of this before. Are you looking for a tutorial?
I googled 'crochet rug using plastic bags' and you wouldn't believe the links that came up.
I know - me too! It looks like a pretty cool craft.
and durable too.
A friend from school is involved in crocheting sleeping mats for the homeless from plastic bags. She has made tons of them and they are distributed somehow through her church. Not a lot of homeless folks here, so I imagine they are bound for urban shelters.
that is so nice Lori