I’ve gone back and forth on this.
One thing I can say is that when I achieve flow in a short story or longer-form fiction, the last thing I want to do is open another tab and start blogging about it. I don’t want to do anything other than stay in the flow.
But no one is in always in the flow. It’s not productive to try. Stay in the flow as long as it’s flowing, but understand that your subconscious needs a break. You’re not at peak creative performance all the time. You need downtime and sleep and the daily demands of life. That’s not glamorous, but it’s true.
Don’t write drunk and edit sober. Don’t forget about sleep. REM-cycles are essential for the next day’s writing, and for bridging the brilliance of yesterday’s flow with today’s and tomorrow’s.
There are times when you can’t work on The Thing In Itself. But that doesn’t mean you can’t write at all. When the flow stops, shift gears. Dig out an old post and revise. Make it better. Re-share.
Read. Read short stories. Read books.
I’d suggest reading more than you blog, but if you have a family or a partner or a dog or a cat or a goldfish or parents or siblings or nieces or nephews or bosses or bills, you have commitments outside of yourself. Sometimes you can blog while doing other things (I do not mean driving). It’s much harder to read while your spouse watches Chopped. (You should also watch Chopped. It’s great.)
Blogging (or tweeting) does not mess up a writing life, but it needs to kept in perspective. Sometimes, it can help unlock the next round of creative flow.
That’s been my experience. What’s been yours?