Synergizes well with Zealous Judge to make back your . Also a viable choice against an Alice Merchant + God of War-heavy meta, which relies on tag-me to power certain clan resources. Historically, any deck archetype daring to go tag-me against NBN has found itself both empowered, because ICE like Data Raven ceases to matter; and afraid, because ICE like Thoth suddenly matters a lot. With Escalate Vitriol scored, though, that just changes to being afraid. I've seen God of War decks go to upwards of 30 tags. Imagine clicking for 30.
For short-term gains outside of this edge case, though, SEA Source and Hard-Hitting News are reliable tagging operations you can fire on your turn, though with HHN you need to - as has been mentioned below - get the tags to stick. MCA Informant is much the same. Unfortunately most of the other cards that help tag the Runner on your turn have, alas, rotated out. RIP, Big Brother and Midseason Replacements.
All in all, Escalate Vitriol is probably good as a one- or two-off if tag-me is heavy in your local meta. Would advise packing it with the Judge of Zealousness. Just keep giving them two tags every turn, then clicking to cash in on all of them! :3