TacNet (pg 124 unwired) appears to be one of the most useful programs out there. How common would a TacNet program be on any given commlink. The fluff here makes it sound like every athletic Joe wageslave has one. Opinions please!
At 3,000 nuyen and Availability 5 per rating, I'd say extremely uncommon.
If you play field sport like lacrosse, hocker, or football (eather kind), your coach will give you a TacNet Class program...
I believe the coach is running the Tac Net software and the team players' commlinks slave to his for Tac Net participation.
If a team of runners hack a TacNet Feed (Radio Signal Scanner or Sniffer and assuming have bypassed encryption) should it only count as one sense and should a greater game mechanical advantage be provided. Consider that a TacNet is made up of many feeds and battle data
The feed alone won't give them any Tac Net benefit. Each person/drone must provide sufficient qualifying sensor channels of their own to the Tac Net in order to be a participating member (and I also rule they have to be in the same general area). Assuming they receive all the information provided by the feed, it should give them a good idea of the other group's location, makeup, and actions. It should also provide a substantial modifier to ambush the other group.
If a runner had deep insight into brand and programing of TacNet sofware and the team knows what their enemy is running would you provide a game mechanical advantage because the runner has a better chance of predicting what it will do
Interesting train of thought, but no.