Please don't reply to terrible posts. In this case they fail to be able to read and comprehend a clearly worded tooltip or even to read the OP that explains it. Replying to such posts instead of reporting them just gives us more to clean up.
Originally Posted by BadCo
Does it apply 6 seconds worth of SS damage spread out across 6 seconds? Or does it instantaneously apply 6 seconds worth of SS damage?
If it's actually the latter case, then wouldn't it behoove us to take 2 points in this, no matter how often we shoot multi-shot?
It means that targets are afflicted by a 6 second long serpent sting (6/21sts of the damage of a normal SpS over 6 seconds). 1/2 points is recommended because you only have to Multi-Shot every 6 seconds to have a 100% DoT uptime, so the 2nd point would hardly do anything.