When I started to “become religious” (as in Jewish), I stopped writing God and started substituting that with G-d instead. And no, not because of any mispeling vyrus I caught from reading too many Thursday Next novels in quick succession.
Many of my friends as you can imagine were perplexed, especially since I was an English teacher and a very good speller. I’m most notable for acing every elementary school spelling bee and wiping the floor with oppenents playing Cranium because I can spell the most ridiculous things backwards.
This handy Q & A from Chabad explains the Orthodox Jewish practice of writing G-d instead of God. Check it out: “Can I delete G‑d’s name on a computer screen?”