Some users are just aren't satisfied with constructively participating in your community and want to cause problems instead by aggravating everyone else.
You may encounter the Troll - the user who relishes in spamming your forums with annoying messages and random drivel. We recommend that you use our blocking feature which will denies access to your community based on an IP address.
When you edit messages in your forum, you will see the IP address next to the message title. It takes the form of x.x.x.x, where x is a number between 0 and 255. If you have a user that comes from an IP address of 127.216.18.30, for example, you can block that user from your resources by adding this address to the IP blocking rules, which can be found under your Account Options when you login.
Sometimes users can have a dynamic IP address - this means the IP address changes everytime the user connect to the Internet. For example, a user may come from the address 127.216.18.30 on one day, and the next day the address might be 127.216.18.154. In this case you can use a wildcard operator (which is the number 0) to block any address which uses the first three numbers. In this case you could use a blocked address of 127.216.18.0 which would block out all IP addresses starting with 127.216.18.x (x being any number from 0 to 255).
Click here to access your IP blocking
If you're still having trouble with obnoxious users, you may want to consider setting up a moderated forum by using our Access Control features.