I know a lot of Lindas. I had two in my class alone in primary school. I don't know any
Linda under the age of 12. I see it as dated, and I hope it won't make a comeback.
Lynda looks trendy and misspelled to me, but it does look less dated. I usually use
Linda as an example of a bland name. The only way I would think
Linda would be okay is as a nn for
Rosalinda or something like that.