We have been running the forum for about 9 months now, and for the first time we are getting the odd what look like spammy applicants. With strange usernames and temporary email address from services such as gustr.com.
Bit annoying, but can deal with it. Just reject them. I am more concerned why they want to join? Is this so they can join and spam the forum, or is this an attempt to hack the login and the forum?