Well, I'm kind of tired of reading all this buffing about profitability in PB, so here are some actual facts:started 24th March, did a small initial buy to test it and them gone ahead with actual investments. Reinvested all of the payout received until the 5th May.
I'll share all the details here, for everyone's benefit, I hope:

All values are exact BTC and all calculations have 8 decimal accuracy; Calculated values are refreshed every week with new total payout values
Averages have been lowering and will predictably keep on doing so, because payouts are showing a ~10% drop per week.
Just facts, no predictions

Notice that my data is always in BTC, because that's the only logic analysis possible, since PB is an investment in BTC - if you get profits or not in USD/EUR/whatever is a complete different situation and depends on how and for how much you got your BTC in the first place
As you can see, so far, profitability is achievable around week 15 after the investment date, i.e., ~3,5 months.
Now, is it so difficult to believe the breakeven in BTC is achievable in 6 months? And that from that point on, it's profit land all the way through, in BTC? 
For those that *still* believe that PB might be a scam or a ponzy, all you have to do is invest only once, wait 6 months, and enjoy the ride - is it's a scam, they'll loose money with you from that point foward, LOL