A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
Sure there are a lot of sites that are equal to or better than answers for unity, but answers holds a major amount of solved question that a lot...
I literally only found this thread through Answers o_O... Personally it feels like Answers is so much more superior compared to the Forum....