To the radio or what?
The only thing I've bought was lifeinvader when it plummeted. I've forgotten to do anything since then.
You will eventually do some assassination style missions later on
I had a serious brain fart on life invader and did the opposite. I bought it before the mission and now it is worthless
ETA: I think one thing you can do is buy one of the radio stations stock and try to only listen to that station. It seems to have worked, but I don't know if that is me effecting it or not
This post was edited on 9/19 at 1:43 pm