Most developed countries are democracies, and democracy means that governments should obey the will of the people. The exercise of democracy means aggregating social information, and this is so easily done now through the internet. However, the use of internet for exercising democratic rights seems very limited. Why it is so? Why people spend more time on Facebook than on a political social network where the opinions…
In the U.S. at least, the Internet plays a very large and growing role in elections. In fact I would argue that in the most recent election, the Internet scored a decisive win over TV ads--the most effective political tool for the past 40 years.
Once officials are in office, they can be petitioned (lobbied), and again the Internet plays a major role in how unions, associations, nonprofits, etc. organize their grassroots to do that.
Keep in mind that "Internet" means more than Web; in the case of politics, email is still king.