First of all, waiting for mass cheatings and stuffings, people distributed information about any violations in social networks (mainly Facebook, Vkontakte, Twitter). On Sunday my feed on FB consisted only of videos, photos and links of violations during elections.
And at the same momemt main Russian TV channels said nothing about it.
In the end on Sunday and next Monday morning in social networks appeared first messages which invited to join protest meeting concerning unfair eletions which was planned for Monday evening. And again all information was distributed in social media only. Main platforms - Facebook, Vkontakte, Livejournal, Twitter (heshtags #чп #5дек #5dec)
On Monday evening about 7000 people came to the center of Moscow to protest against cheating and elections' results. And all of them were informed with the help of social media only! This is an example of video from the meeting: http://www.youtube.com/watch?v=iWdNjT0a6UU
An as I can see from my feeds on social networks protests are planning to go on on Tuesday's evening as well.
Of course, it is not a new revolution. The level of people's disagreement is not high enough. They don't have any clear requirements of suggestions. And there is no real alternative for current politicians.
But the important thing in this case is that even without any true information from main TV channels, social media have enough capabilities to gather several thousands of people! It is a good case for Russian politics ahead of president elections on spring'12.