About that, I have noticed that on most cases the posts under 1 SBD doesn't change with the market variations because of the same thing about the decimals. The market should change something like 10% up or down to modify 0.99 collected by a post. And 10% change on the steem value doesn't happen very often or that suddenly, it does happen (it just happened this week) but is not something that we (users) should count on.