That is what you could read in the August Update that everyone received by email. Additionally to that they received a few DDOS attacks.
So what does this mean? They say that they won't have their selfsponsored standard ads while they recover and that their security was updated to prevent these things from happening again. Also there will be delay in development of new features because of the reasons above.
The new project by Wordlinx called Moreshare.com will hopefully bring more funds to sustain this wounderful ptc site for many more years. Clixsense did a similar thing to get more revenue, they started two new programs and promoted it with massive traffic from clixsense.