Cut down on spam from your WordPress Site
Akismet from Automattic is a must for any wordpress blog! Quoted from their website:
Akismet is an advanced hosted anti-spam service aimed at thwarting the underbelly of the web. It efficiently processes and analyzes masses of data from millions of sites and communities in real time. To fight the latest and dirtiest tactics embraced by the world’s most proficient spammers, it learns and evolves every single second of every single day. Because you have better things to do.
Available for free or paid, depending on your website’s purpose, it is a necessity for anyone who has a blog on their business or personal website.