I am not 100% happy with the petition either, but I signed it anyway. Most of us never take the time to raise our voice, even though it is important to do so. If you think some of the things in the petition are important but will not take the time to write your own letters, then you should sign it.
On his own dime, Karl is going to fax each signature so this is not just a regular petition. If he gets 100,000 signatures, he is also going print it all out and mail it to the President.
Raise your voice, people!