I wrote big explanation and it got all erased.
To be short :
1. Daily Page views per Visitor fell 3.26% in 3 months.
2. Daily time on the Site fell 7.00% in 3 months.
3. New metrics, and earnings will not meet Wall Street expectations.
4. To much competition. (Prediction: Apple will reach 30 mil of users before earnings. Especially with all those Macs getting new iOS now.)
5. I I'm free of Pandora for 32 days and I don't miss it. I erased it.
Most apps are like a toy , popular until someone says it's old and that there is something better. This is the peak of pandora and beginning of the down trend just like ANGI and the rest of them.