Hi there .... you asked whether there are any other sites like nonoba that you may log on to using your nonoba account credentials.
I would have to say the answer to that is "no". Now I'm not 100% certain but I did do a little research on the web before writing this reply. Many sites will give you access to their sites if you sign in with your facebook account. Same with Gmail. So its a good question. Unfortunately, in this case, I believe the answer is No.
While we (as members) do not know what the future may hold for nonoba, we can only keep our fingers crossed that they'll be back up and running in no time!
In the meantime, there are literally MILLIONS of gaming communities on the Web. Signup is quick and easy in most cases. OMGPOP.com and Kongregate.com are 2 of the best out there. In fact, many of nonoba's members are also members on Kongregate, OMGPOP, Pogo, Armorgames and others. I run into nonoba people on kongregate quite often! Especially during downtime at nonoba!
Thanks for writing ... happy gaming!
