If you are playing Daily Casts in your Criminal Deck right now, consider giving Tapwrm a try instead. Tapwrm can earn you much more in credits than Daily Casts, and it puts pressure on the Corp to either keep its credit count low or spend time purging. It also has a lower up-front cost than Daily Casts.
This card is most effective when you are not running lots of other virus cards. When the Corp's decision about purging is just to eliminate this card, it becomes much more difficult to justify.