Should I stop?
Often in combat maps, I will take the time to sneak my cloaked self into a well hidden nook in the marine start and parasite as many marines as I can. With the right nook and a bit of luck (as well as knowing when to stop and stay cloaked) I can get dozens and dozens before the enraged marines finally spot me and wreak their terrible revenge. To me, this is immensely fun and I often drift to sleep at the end of the day replaying the marines screeches of anger in my head.
Doing this tends to get one of two reactions from my teammates:
1) "Get down from there and do something useful you loser!!"
2) Wow, that is so cool. Stay there and get the lot of them.
To date I get around 75% #2 and the rest #1, but I ask you if YOU think this is a useful thing for one member of an alien team to do?