How do you protect your forum from spam?

[Jason]

My method is asking people to spell a word backwards. It is quite effective but there could be obstacles in the future as bots become smarter.

[Nomad]

One of the best ways to deal with forum spam is manually approving posts until the users reaches a certain number. For instance, you can put 25 posts under moderation and if the first 25 posts are good, you can then let the posts approve automatically.

[Jason]

One of the best ways to deal with forum spam is manually approving posts until the users reaches a certain number. For instance, you can put 25 posts under moderation and if the first 25 posts are good, you can then let the posts approve automatically.

I just wouldn't let them in to begin with.

[Nomad]

How do you know someone is a spammer without them posting on your forum. Well, some email looks suspicious but you cannot determine someone is a spammer or not if they are using trusted email provider.

[Jason]

How do you know someone is a spammer without them posting on your forum. Well, some email looks suspicious but you cannot determine someone is a spammer or not if they are using trusted email provider.

Most can be stopped at registration, not all.