WordBricks - first step
Each account has at least one API Key for small databases access by default, named "defapk.” You will need a different key for each WB blog you may have.
The database selection is here to cover this need, when you have more than one blogs or for whatever reason do not want to store data to the default API Key you can select another.
Just select a database to store the data for your current blog and you’re ready.
Do NOT change the first setting unless you want to have a new posts list without history.