I think it's important to experiment with writing, to find what suits you best, what genre, what themes. For me, having a blog was a way of discovering what genre I was most attracted to. It was also a way to keep me writing because even if I have good ideas (well, good from my perspective, anyway) for stories, I tend to procrastinate. A LOT. "Tomorrow" always sounds better than "today".
I'll read almost anything but when it comes to writing I find myself leaning towards the dark and deep waters of horror, mystery and fantasy. Whatever I write tends to veer in this direction, somehow.
Also, I really like flash fiction. It's quick, short, and has to be made all the more interesting because of the word limit. That's like a cup of strong coffee for the sleepy mind, and a good exercise in writing.