AdSense Revenue Died Off...

[pantam10]

I have been using AdSense for close to 4 yrs now on a variety of websites. My best single month was over $100.00, but it's been a long time since I made that amount. Everything was going great and then it was like someone shut off the water.

Seriously, I went from making more than $2-3 per day to making less than $0.10. Has anyone else had the same experiences or do you know how to remedy this?

I run 4 blogs, 3 of which have content added to them on a regular basis. AdSense ads are present on all pages, including within the post, etc. - all the standard locations.

So what am I doing wrong?

Here are a couple sites I have my AdSense installed on. Any tips/ideas would be greatly appreciated.

http://nbaweblog.com/suns/
http://www.411lowdown.com

I have another site too, but since the focus there is selling Amazon products, I'll skip it here.

Btw... this is my first day here on the forums and already it looks like a great place to learn. I'm hoping to improve the performance of my blogs (w/ your help!).

Thanks!