There was a briefly a previous MiniCoin (just as there was briefly a previous ByteCoin), but it's gone and never coming back.
See the thing is, we purposely avoided choosing any name which had already been used by another coin. I'm sure that even if MiniCoin is totally dead, there are still many remnants of it on the internet which will cause confusion for people. It took us a very long time to find a good name which hadn't already been used, and the domain was still available. I also really like the logo we have, which I paid to have made. At this point it would be a total pain to change the name, but if you want to call it MiniCoin as a secondary name and redirect one or more of those domains to cryptonite.info I wouldn't be against it. Personally I just don't think changing the name would really benefit us very much, I think there are far more important things to focus on, and if the name is good enough now I see no reason to mess with it.
When I tell people about this coin, I have to use the qualifier 'with a c-, not like in superman, and also with an -ite, not night, like, you know, the dark time after the sun goes down' and they say, 'oh it's like bytecoin or monero!' and I say 'no it's an all new POW called M7' and they say 'then why's it named after their POW?' and I say again 'no, it's spelled with an -ite' and they say 'oh like superman!!' and then I give up and change the subject.