There are a lot of people currently expressing new forms of activism, social media is playing a huge part these days.
Most definitely! Social media is one of the biggest ways people get there information right now.
Yes, it's a great way to start what's referred to as 'grassroots' campaigns.
I have heard many references to such, but I am not that familiar with the term. Please tell me more about it. 
Grassroots refers to creating campaigns from the 'bottom-up', rather than from the top-down and are considered as being more natural.
That's very interesting. So the people are supposed to be more involved and there should be less political interference?
Yes. Many people focusing action by word of mouth at the local, regional and national levels.
Is the information that comes out of these campaigns on par with the information you get in traditional campaigns?
Political campaign
A political campaign is an organized effort which seeks to influence the decision making progress within a specific group. In democracies, political campaigns often refer to electoral campaigns, by which representatives are chosen or referendums are decided. In modern politics, the most high-profile political campaigns are focused on general elections and candidates for head of state or head of government, often a president or prime minister.
Campaign message.
The message of the campaign contains the ideas that the candidate wants to share with the voters
Media activism
Media activism is a broad category of activism that utilizes media and communication technologies for social and political movements. Methods of media activism include publishing news on websites, creating video and audio investigations, spreading information about protests, and organizing campaigns relating to media and communications policies.
Media activism can be used for many different purposes. It is often employed by grassroots activists and anarchists to spread information not available via mainstream media or to share censored news stories. Certain forms of politically motivated hacking and net-based campaigns