If we predicted success by Reddit popularity, Ron Paul would be in the 7th year of his presidency.
In 2008, reddit as we know it today did not exist. In July 2012, reddit got 40 million unique visitors. In April 2015, it had 169 million unique visitors.
These are the demographic survey results for the Bernie Sanders subreddit. I doubt the makeup of 2012 Ron Paul supporters was that different.
The problem for Bernie is that young middle-class (white) men only get you so far in a primary.
And the fact that now there's mild acquiescence to Hillary on Reddit, and even quite a lot of support for her on Daily Kos show's how much stronger a position she is in than in 2008, when those sites viewed her as literally Satan incarnate.