Scrap the site

Downing Street has set up an e-petitions website and it has become very succesful. Succesful in a sense that people are visiting the site and signing petitions, but will it really change anything? There is a petition to scrap the ID cards with almost 3,000 signatures but it is certain that the Government will not change its line on ID cards. People will receive a response to the petitions they have signed but that does not mean that any action will be taken. So really, what's the point...?