Conversation so far:
What happened in 2009?
DSP announced that it would commence voting on January 28 at the group's official website for the follow-up single to "Pretty Girl".
what did they vote on?
the follow-up single to "Pretty Girl", which ended on February.
was the single successful?
"Honey" was the clear winner, with 60% of the votes.
what was revolution?
full album, Revolution, available online on July 30.
was tha album popular?
Kara's overall popularity increased, evidenced by an influx of advertisement requests by various companies; in.
did they do commercials?
CANNOTANSWER.

Question: what advertisements did they do?
Self-contained rewrite: what advertisements did Kara do?