How to find out if a user is a spambot?.
First, don't start crying: "SPAM, SPAM, IT'S SPAM!!!!"
You should put the name in Google. I put the name: *********** (I don't show the name for some reasons) in it. It returned 18.000 results, ranging from forums about science and games to religion and photos. I don't think that it is possible to join 18.000 forums and this is likely that this is a spambot.
Then you may cry: "SPAM, SPAM, IT'S SPAM!!!!"