The benefit of a Pop-up Window combined with a hard End the run. subroutine. This card is best suited for all the same purposes that you would use a Pop-up for. Tax/econ swing on centrals and a cheap tax ice to defend econ assets. The downside compared to Pop-up is that it will cost two influence outside of Weyland.
Now it may be tempting to start adding Sensei, Marker, TL;DR or Sub Boost to this to maximise the economic benefit. Don't do it. You will be gilding the very breakable and Parasite vulnerable lily by trying to boost the number of subs on this ice whilst filling your deck with substandard positional ice. If you really want to 'double' the effect you may as well just play a second copy, or a Pop-up, or both. Even better, just add more econ cards to your deck, you won't regret it.
Just remember that installing any Fracter apart from Cerberus "Lady" H1, Aurora, Battering Ram or GS Sherman M3 will effectively turn Bailiff into a Pop-up, so it can't be used to defend anything that's really valuable.