Armitage Codebusting is the faithful like Sure Gamble. What it does, is increase the efficiency of clicking for credits. Instead of clicking for 1, you click for 2. If you are not an Anarch, you should think of slotting Armitage. If you are Anarch, Liberated Account is better.
Let's compare it to other creds stable. Sure Gamble is burst econ, giving you 4 creds now. Daily Cast is clickless drip, giving 5 creds over 4 turns. Armitage Codebusting will give you 11 creds, after using 6 clicks.
Each have their place. If you look for efficiency, Daily Cast is better. The calculation goes like this. We assume 1 click = 1 credit. To make things normal, we'll assume you have the card in hand, discounting how you got it there and we'll discount the click to install, because all three would be the same.
Daily Cast will cost 1 click and give you a net of 5 creds after 4 turns. Sure Gamble will give you 4 creds. Armitage will give you a net of 5 creds after 6 clicks (11 creds minus 6 click).
The choice then is about what can you do with the creds. If you need to install only one thing or to make a small run (2 ices deep), Sure Gamble got you covered. If you need to build up with relatively cheap stuff (install with cards that cost 0 or 1), Daily Cast got you covered. But if you want to do some serious setup, you can spend your turn to empty Armitage, and 3 click the next turn, to have a big pile of credits to setup expensive cards.
Also, with Shaper, just putting it there allow you to not use Professional Contacts all the time and "click for 2 creds" when you need the extra for installs or runs.
Very useful. Since it's neutral, you will see it everwhere outside of Anarch. It is old, it is reliable, it serves well. Also, that cat is a beauty.