This could be great, but there are a few issues.

1) Money. The reason that labor unions are so successful is because they have a great deal of money. We all know and complain about how big corporations are able to control the political discourse, and that is because of money. Only one method in history has empowered the common man to the same degree, and that is labor unions. The reason they work is because they pool together the resources of these common men to fight the corporate lobbies with fire. So, if we can create one supermassive "internet users" lobby of which a large percentage of Reddit users and other internet users join and pay annual fees towards, then we're set. However, this seems unlikely, right?

2) Influence. I certainly doubt that we'll ever get a unified and large "Internet Lobby" that gets its power through money. So, I think this "bat-signal" type mechanism could be a useful substitute. However, it needs to be organized. Specifically, there needs to be an incredible uniformity of the message, and that power needs to be exercised rarely. So, for instance, instead of focusing on all the issues that could affect internet users, this organization needs to basically pick out the worst 5% of Congressmen each year and spread horrible truths about them. It should do a ranking-type mechanism as many labor unions do, which also then rewards the best 5-10% of Congressmen.