I recommend using this method to backup your blog! It saves all aspects of your blog for you with a python script. I’ve so far backuped @nilysil @chamberofnectar and @vuetyris with it and it only takes a few minutes!
Don’t be scared of the command line input, this is by far my favorite archiver! You can archive by tag, by year, by type.
If you’re wanting to show your displeasure, don’t just tag staff or support. Take a page out of other consumer revolts and make sure your displeasure is known.
Don’t be an idiot. Do not threaten, harass or otherwise make this personal. Contact these companies, make your displeasure known, alert them that you are a customer and you will be leaving their brand across all boards unless they reverse their decision.
Be clear, be concise, be polite, but make your displeasure known.