In the days of seemingly inflated valuations, there are a number of companies that are taking this as a sign to sell quick, or seek out yet another round. When you're a bigger, more established company, however, getting that third or fourth round of funding can be a blessing and a curse, because the culprit behind getting that latest round of funding is often a result of being unable to sell.
With no exit strategy in sight (should these rumors be substantiated), there will likely be a bigger push for more feature upgrades and integration with partner media sites. Given Digg's widespread presence across websites, and more recent maneuvers to get Digg better integrated with mainstream news sites like CNN, Digg remains remarkably niche, and incredibly powerful nonetheless.