I would like to think that the site is doing so well that they have neglected the forum because they are so busy with other tasks. Although I am not justifying it, the truth is that it does not give a good image, but a site that has worked so well for so long and must have earned so much money I find it hard to think that suddenly it is because of economic problems or something.
Abandon forum wouldn't be concerning if everything actually would be going very well with Freebitco.in. Then there wouldn't be such long delay with winners announcement. Or as said above, it's almost impossible to get reply from their support. Though, I'm not implying that they have financial problems or something similar.
Back in the day Freebitco.in was like example how service should communicate. Now they turned into huge corporation which is afar away from their customers.