[ASK] How to boost my earnings again?

Hi BHW fellas, vahnz13 here. I have been 'playing' with youtube as my main traffic source for 3 months and already earned 1K+ on my 2nd months. At that time, I stable racked nice $$ around $60+ per day with my niche from youtube alone.

Now, on my 3rd month (August, 2012) with same videos (I added more videos on my youtube account also with the same niche on some vids), my earnings dropped from $60+/day to $15/day. WTF??

I'm on gaming niche if you want to know. My questions :

1. Do you think my niche or my videos is getting saturated? Should I uploaded new videos but with same niche? ex. I had WoW video on youtube, should I add more (new) WoW videos? like WoW cheats, WoW trainer, etc?

2. I already told ya, I'm on gaming niche. How do I find new niche on game if I want to add more videos on youtube? I mean, for example, beta key is for games which still on beta and pc only, but how if I want to (say I will take xbox and ps 3 games as my niche) post new niche with xbox or ps 3 games? What should I offer to my visitors??

3. If I want to post next coming games, what should I post then? beta key? beta game download? As far as I know, not any game have a beta test right? So, what should I do?

4. What do you think that will give the nice cash on download, "next coming" game or "just released" game?

I have a lot of homework to do here fellas', and I hope I'll get some help from my BHW brothers and sisters here

*Sorry for my bad english. I'm Indonesian :30:

No hand for this guys? Anyone?

various things may have affected your videos.youtube changed its alghorithm,people might not be very interested in your niche.you might need to create newer videos and also rankings of your videos could have gone done.you need to look at it from every angle.