If you can use the tag during the run (Information Overload, Universal Connectivity Fee, Muckraker, and I'm not sure about the timing on Dedicated Response Team).
Against cards that are immediately trashed when tagged (Rachel Beckman, Zona Sul Shipping)
If the runner knows you can prevent their run from being successful but needs to run anyway (Crisium Grid, Caprice Nisei, Nisei MK II)
If the runner deliberately wants to make an unsuccessful run (Au Revoir, Jinteki: Replicating Perfection)
If the runner thinks they can make a successful run, but they actually can't. This one is difficult because you will need a server with another face down ice already on it. Chimera should work well for this.
Getting the tag to stick not only past the end of the run but past the end of the turn is quite difficult, unless the runner is already tagged and this is just adding to the aggregate.