I would use a dated name if I loved it enough, myself. I too, prefer [name]Erica[/name] over [name]Erika[/name] but have no major problem with either name. I’d probably be pleasantly surprised to meet a little [name]Erika[/name]/[name]Erica[/name] for real. I wouldn’t worry about what reactions I found on a website, I’d run the name past people I knew as a general question “What do you think of [name]Erika[/name]/[name]Erica[/name]?” If the people I knew in real life hated it, I’d have more of a problem than if strangers online hated it. I named my daughter a name that got a lot of “ugly, old lady, wrinkly awful mothbally name” comments online. What really counts is how myself and her father feel about her name. peripherally, her brothers, Uncles, Aunts, Grandparents and then friends. After that, I don’t care who likes or dislikes a name I like.
I hope that made some sense and that it helped.