WOW WHAT A GOOD CARD.
"Now Gerrark," you are surely saying to yourself, "You must be joking. You're paying two clicks for two cards, so you're not getting ahead at all. In fact, if you count the original credit and click from installing this card, you literally cannot come out ahead efficiency-wise with this card."
All true, I'll admit. But this card is not about efficiency. It's about flexibility.
More than anyone else, Crims are reliant on their events. Account Siphon, Inside Job, High-Stakes Job, Drive By, Legwork, and so forth. These events are all extremely powerful, and are absolutely worth the one time usage. But they all have a major drawback: what if you can't use them right now? What if the corp has 1 cred, making an Account Siphon pointless, or no unrezzed ice, making High-Stakes Job impossible to use? These aren't hardware or programs, that, if worse comes to worse, you can just plop them on the table and let your opponent know what's coming. Events are use it or lose it. Which is where this card comes in.
Got an Account Siphon that you can't use right now? Shuffle it back in! Got an Inside Job but no servers worth running? Shuffle it back in! Just drew a Rumor Mill and you know it'll be ages before it's needed, if at all? Shuffle it back in! No longer will Runners have to fear that their event based econ or running game plan will end in their hand getting clogged up with a bunch of cards that are extremely powerful, but just can't do anything at this exact moment. In fact, say you're down to your last five cards or so in your deck; with Blockade Runner, your stack is almost like a second grip for you!
At 1 cred and 1 influence, this card can easily make an appearance in Shaper, Anarch, or mini faction decks that use a lot of events. Which isn't to say that I think this card will see a lot of use, even in Criminal. I'm guessing that it won't, because as strong as events are, a ton of decks don't rely on them to the point where a card like this is all that necessary. Still, if you've got a crapton of events and often find yourself with three in hand and nothing to do with them, go ahead and slot this card. It'll help.