The charges are too serious to ignore. There is credible evidence that the Vice President abused the power of his office, and not only brought us into an unneccesary war but violated the civil liberties and privacy of American citizens. It is the constitutional duty of Congress to hold impeachment hearings.
Congressman Wexler is asking you to sign up to support impeachment. In the 5 days this has been up, it's gotten well over 100,000 signatures.
There's a lot of good information on that site, and I challenge anyone who does not sign on in support of impeaching Cheney to leave a comment telling why. Otherwise you better damn well sign it!
Think Progress has even more information, along with an audio interview with the Congressman.