captcha

Earlier this month, Mollom was officially discontinued. If you still have the Mollom module installed on some of your Drupal sites, form submissions that were previously protected by Mollom will behave as if Mollom was offline completely, meaning any spam Mollom would've prevented will be passed through.

For many Drupal sites, especially smaller sites that deal mostly with bot spam, there are a number of great modules that will help prevent 90% or more of all spam submissions, for example:

From the article reCAPTCHAs are finally readable by normal humans:

Google today announced that reCAPTCHAs served up to humans are finally readable without the need to squint your eyes or bang your keyboard in frustration after typing the wrong sequence of letters five times in a row. Who can even read those things, amirite?

I'm glad Google is making CAPTCHAs easier for humans to read. For the very, very rare times when they're necessary, that's a good thing.

However, I want to make an appeal to the thousands of developers who are thinking of implementing a CAPTCHA to deal with their site's form/registration spam: use CAPTCHAs only as a last resort.

CAPTCHAs: The nuclear option.