[aftbit]

Yet another script that asks you to pipe curl to sh. At least they used https.

[basdp]

Therefor you should always check out the script before running.

[coldtea]

So? Nothing different that downloading an opaque binary and executing them -- which we do all the time.

It's all about trust.

When you run:

apt-get install foo

is it any different? You download a file that essentially runs anything pre- and post- install of the rpm.