The last reviews for this card were in mid-2015 and they politely said "hey, maybe you could consider playing this card in a few lists, but this card is kiiiiinda garbage." And that is still sort of true, but Predictive Algorithm got a gigantic boost in last 2015: Data and Destiny dropped, and New Angeles Sol: Your News got printed.
Chances are, if you've ever given New Angeles Sol any serious thought, you've already poured over the list of all corp currents and given Predictive Algorithm a good thinking through. Predictive Algorithm is comically more impactful in a Sol deck than it is in any other deck. When you play Sol, Predictive Algorithm just doesn't go away. Whereas Predictive Algorithm used to just tax the runner for 2 once, now for the rest of the game, if the runner wants to steal an agenda, it's going to cost 2.
There's a lot of shenanigans you can get into with this. Combine Predictive Algorithm with Red Herrings and it is possible the runner just doesn't have the money to take your agenda. Red Herrings generally isn't reliable enough to be a solid defensive upgrade, but Predictive Algorithm makes it a lot more viable. Additionally, NBN has a handful of agendas that do something nice for you whenever the runner accesses them, like Explode-a-palooza, TGTBT, and Award Bait. Predictive Algorith helps you put the runner in situations where they might access agenda and yet be unable to take it, letting you get 5 off your Explode-a-palooza without giving up agenda points. Neat trick. Just hope they don't have Film Critic.
Unfortunately, even thought Predictive Algorithm got a huge power boost, it STILL isn't making it into a lot of decks. The reason: Targeted Marketing. Targeted Marketing costs the same, but can potentially slow the runner down even more than Predictive Algorithm. It's a great situation: either the runner gives you a bunch of money to rez all your stuff and play all your operations, or you've disrupted their strategy. Predictive Algorithm, while a nice bonus, seems not to be as good.
With Temüjin Contract, runner economies are kind of bananas right now. Predictive Algorithm is probably ESPECIALLY not great right now. But it's still a decent effect.
Consider it if you need a few extra currents for your Sol deck.
Consider it if you want to slot some Red Herrings to combat Rumor Mill.
Consider it if Targeted Marketing is too hard to play because it makes you make choices and choices are hard.