I get a LOT of spam

[Warrior01]

I get those random spam things where it's just random keywords. I'm assuming it's from one of those SEO programs like Scrapebox or something.

Does anyone have any tips on preventing it?

[Nathan Malcolm]

Please see: http://community.mybb.com/thread-110224.html

MyBB 1.6.5 has many features such as reCAPTCHA that can be enabled to prevent spammers from registering.

[smexy]

1605 solved 99% of all my spam! If you're not on version 1605 yet then you need to get on it! I also recommend the Hot Words plugin (mybb central) as it helps also.

[Josh H.]

Some more plugins to act as tertiary prevention (search in mods database):
Goodbye Spammer
Registration Security Question
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Just get and enable those, enable reCaptcha, name that honeypot field something that might be tempting to them.
Recommendation: set some custom questions for the Registration Security Question plugin. Mix numbers, words, and symbols in.

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By now,your spam should be dead - or at least, almost dead. There is the odd bot here and there, but that's what the goodbye spammer mod is for.

Hope this helps!

[weBex]

http://mods.mybb.com/view/limiturlposting

This is also great, if your spammers are trying to post links.
Set the members group so they require at least 10 post counts before they can post hyperlinks.

Works great.

[forumhookers]

Add stopforumspam mod that will help you report spammer

[Josh H.]

Add stopforumspam mod that will help you report spammer

Forgot that one... it is a great plugin!