If you have a full time job, study or just for some other reason can't sit day in and day out with your blog then scheduling things, like your posts, is a life saver! If you are on Blogger you can get a link to your scheduled post so you can go right on over to scheduling a linked post on your Twitter, Facebook or any other site.
Write down ideas!
If you get a post idea then write it down in either a notebook or your cellphone. I know many today use their phone and why shouldn't they with all the apps that is available today! I myself prefer to write by hand when it comes to this so I have too many notebooks because I am notebook crazy.
If you get a post flowing around in your brain and have the time, sit down and write it down even if it's just a part of it. And when you get back you have some of the work done already, sometimes it's just a photo for the post that's missing.
What do you do to keep your blog flow going?