I'm earning much more from Adsense these days, but still the exchange rates which is dropping like crazy sure has a BIG effect on earnings! Gosh, those old Adsense days are sure great, good eCPM, and good exchange rates!
Can't do much about the fluctuations. You can always keep hoping that it starts going the other way soon!
You can stop payments at any time. I did it last year; payments were on hold for 3 or 4 months. It helped a little, but if I waited another month, I'd get about 300 euros more (that time euro wasn't available for me, but I just want to show you the difference).
all depend on Google policies but Ad word experts don't want to spend more money so how google will pay you more. Everything is depend on clients. I think.
the exchange rate for most part isn't too bad right now. but, from what analysts have been saying it could get worse in the near future. So, anyone who has earnings on hold, I'd say u should take what ur getting right now.