The PWB script "nowcommons.py" is based on former Multichill's tool https://toolserver.org/~multichill/nowcommons.php and currently it does not work. Simply replacing old domain&directory name with the new ones does not help.
It's necessary to fix this script to make it functional again.
Update:
On Dec 28, 2014 Multichill said:
"I didn't move https://toolserver.org/~multichill/nowcommons.php to toollabs. It was giving me too many headaches. Code is free so if someone wants to fork it I can provide the source."