I generally use blue loctite for a lot of things, but it's often not recommended for really small screws. I had never seen comments along the lines of the post you referenced (although it makes a certain amount of sense).
Several 'smiths that I know, as well as a number of DIYers use clear nail polish for smaller parts and it seems to get good reports. It has one big advantage over loctite. Both require completely clean surfaces to reapply. With Loctite that condition can sometimes be hard to meet whereas nail polish comes off easiliy with a little specific remover. You do, however, have to be careful where the remover flows.
