the problem is not with thinking about stuff. But if I were to write blog posts about "I am thinking about X" and then submit those posts to news.YC.. well.

Let me not discourage you though. if you think your cogitations deserve the attention of the folks at news.YC, please, go ahead and submit one link per thought. News.YC is an essentially self correcting system, in my experience, and can probably handle such content free links just fine.