I tend to be pretty selective with my blogroll and I only add blogs that I think I like or will provide my reader with some sort of value. One of those blogs on my roll is ai-Quant, and I like his blog because he shares his expertise as an Electrical Engineer and signal processing with readers.
Now you may ask, what does signal processing have to do with market trends? At first I thought the same but when you think about it more, you realize that trends sure look like waves. One article he posted was about the automatic analysis of volatile financial time series which I highly recommend you download the linked PDF. That article helped me think of a few new market strategies and I probably would've spent years thinking about before coming to the same path as he did.