Scott Hanselman, telling it like it is:
You are not blogging enough. You are pouring your words into increasingly closed and often walled gardens. You are giving control - and sometimes ownership - of your content to social media companies that will SURELY fail. These companies are profoundly overvalued, don't care about permalinks, don't make your content portable, and have terms of service that are so complex and obtuse that there are entire websites dedicate to explaining them.
I do feel like a fraud mostly posting other peoples' words but if I had the time to write I'd probably be a writer. I do need to write more but I'm sick of apologising about it.