Before I knew and dealt with a JW, I thought that they were just like any mainstream Christian group. That was until they told me that they don't celebrate birthdays and holidays. Then, I made more research on what they are about. I also found out that they don't give to other charities as I still remember after 9/11 that the people that didn't contribute squat to the families of the victims were the JWs and their excuse is they always help out in their own ways and have their own charities.
To many non-witnesses that I know (friends, families and acquaintances), they are known for:
1. Annoyingly knocking doors in the morning, especially weekend, just to throw their sales pitch about their rags.
2. Being eccentric people with totally different habits/lifestyle.
3. Not participating in blood transfussion/donation or holidays/birthdays celebration.
Knowing more about the JWs now, I will never join that unGodly cult and will put a restraining order on them if they ever approach my family and kids.
-Ajax