User blog comment:Mrob27/Signs in a Signless Game/@comment-92.19.157.81-20111212015214/@comment-4583259-20111212082154

Yes, that works well and a lot of people do it.

Since I always play in creative mode where all the blocks are free, I tend to use different colored blocks to mark various paths. I usually just use the Chronoboost (which you are also given for free) to skip through the dark.