I don't really have a problem with popularity unless I know several personally in my area that will be around the same age as the child with the name. Even then if I really like the name the popularity wouldn't stop me from using it. I know 5 Jennifers and a
Jenna. Some go primarily by
Jennifer. Maybe 3 go by
Jen regularly. They range from 70s-mid 90's but most are 80's.