Well, i wanted to promote a post, but since I did not have 1 SBD, I put 0.5 SDB and it was rejected.
When looking at my wallet my 0.5 SDB was transferred to 
From which I got this info: https://steemit.com/steemit/@steemitblog/introducing-promoted-content
Now my question is, to put values smaller than 1SDB this is lost?