Account verification helps keep spambots off Weasyl by requiring every new account to be vouched for by an established member of the community before features like commenting, writing journals, and uploading are available.

Don't vouch for users you do not know!
Spam bots are clever and can still join the site, they will then favorite a random image from a user in hopes that someone will vouch for them.
https://www.weasyl.com/help/verification

So if someone you do not know has not verified their account and likes one of your images, do not vouch for them! Once they are vouched for they are able to post spam links and images.

If they are a real person they would have already taken the steps to verify their account through their e-mail or by emailing the support desk.

Again, do not vouch for users you do not know!
Keep Weasyl spam bot free. We just got rid of them, we don't need them returning again.