One of my friends has this name and she loves it. She is a very strong and determined person and this unique name fits her well. As is the case for all names, it becomes annoying when it is misspelled or pronounced incorrectly.
My mother's name is Johnna, and it suits her. She used to think her name meant "beloved", but now, thanks to this site, she knows otherwise! However, many people pronounce her name as "Jo-Hanna", and it annoys her to no end.
My name is Johnna, and let me tell you, it is VERY true that people mess it up to no end. Going to Starbucks can drive me insane sometimes. And first days of school. Teachers are supposed to be smart, right? You'd think they could just pronounce a name right. Haha.