I think I have cgminer configured and I want to connect to a mining pool.

I have created a .sh file with the following text:

export DISPLAY=:0
export GPU_MAX_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1
cd /home/oshirowanen/Downloads/cgminer-3.7.2-x86_64-built
./cgminer --scrypt -o http://<mining_pool>:<port> -u <username> -p <password> -I 9

I found this link for p2pool:

https://bitcointalk.org/index.php?topic=66182.0

and have decided to use the following pool:

California::USA::http://p2pool.stitthappens.com:10336/::1%::LTC::StittHappens::Red Emerald

The format is as follows:

City/State/Province::Country::IP Address:Port::Fee::Coinage Mined::Pool Name::Operator (Nick)Name

My question is, according to the .sh file, I should also have a password, but no password is provided in my chosen p2pool, i.e:

California::USA::http://p2pool.stitthappens.com:10336/::1%::LTC::StittHappens::Red Emerald

Where do I get the password from?

Or are those p2pools at https://bitcointalk.org/index.php?topic=66182.0 only for testing purposes after which you're supposed to configure your own p2pool?