The new edition is available to online readers every Wednesday at 12 noon.
It gives online readers a limited number of free articles before prompting them to pay for access.
Most big papers are watching and waiting as they study the patterns of online readers.
Founded in 1999, it delivers business information and trade news updates to online readers.
The Journal has almost one million paying online readers.
Mr. Ambrose said he hoped some online readers would want to read the whole book.
It also began implementing a system to require online readers to pay for content.
But his online readers have generally been supportive, he said.
Spanish newspaper As's online readers gave him the matches' highest rating among players.
I came across two areas where it seemed that the digital news operation could perhaps be made more effective on behalf of online readers.