This is a great card in Spark Agency: Worldswide Reach decks to generate credit advantage for the corp. If it's the first advertisement rezzed that turn, the credit swing increases to 5 credits.
A good placement of the ice is right in front of a piece of ice such as Tollbooth. This may allow a sudden rez of a piece of ice that the runner was not expecting (since runners may face-check servers based on the corp's credit count).
For cautious runners meanwhile, the mere placement of the ice may be sufficient to deter them from making some early game runs.
It will be interesting to see the devious ways players devise over time to make best use of this trap ice!