I was wandering has anyone noticed that when the phone is charged to 100% while the device is on
that the battery runs down faster then if you charged it while turned off?
maybe it's just my imagination but it seems that way, also is the phone best charged while turned off or does it not really matter in terms off the life of the battery?
as far as I know Li-ion battery's can't be overcharged so I guess it's ok to leave the phone connected to the charger and run it off power rather then battery when at home? 

p.s I'm charging it via wall changer

Thanks :)