Hey Liew,
I suggest, the top banner you put "Image Ads". Then put the Text-Ads between your blogs (in the middle). To earn maximum income on google ad..u gotto do a lot of trial and error.
Did you read the article in in-tech last week? It's like how many little percentage of bloggers are "REALLY" earning money from ads...
If you wanna earn REAL BIG MONEY, I suggest you do a content site. I don't mean you to stop the blog, your blog is fantastic, one of the best i've seen in malaysia, and I think it can serve a great source to attract visitor. What I suggest is like to..ermm..add some content site inside your webpage...may be software/hardware/gadgets review..or may be create some AWS store. yeah, you gotto trial&error&find the multiple way to earn maximum income. The definition of insanity is doing the same thing but expect different result.
Just what i think
