Writing

I'm thinking of starting to practice writing in English in my blog yet again. Like the authors of the books I've read said, constant practices are what make writers better drafters. But I don't really know what to write about yet. I wish there is some program that generates random topics so that I could freely write on that. Well, perhaps there's already one out there, it's just a matter of time to find it. Or, could somebody pick me a topic by commenting on my post? I know nobody is reading my blog, but can't somebody just appear from nowhere and add comments on every single post? Can you, GOD, do it for me???