Filter ONLY asking for listings to be approved if certain keywords are used

I have the "Blue" Classifieds Theme from premiumpress (www.lakomai.com)... here's my question... Does anyone know if there's a way (plugin or otherwise) to FLAG certain posts that have pre-defined keywords, and ask me to APPROVE them before they're sent to the live site? The reason I need it to only apply to listings with certain keywords is because I DONT want to have to approve EVERY SINGLE POST (cuz I know that's an option).... but I would like it to BLOCK posts that have certain "cuss words" or other keywords that I pre-determine. I recently had someone post a ton of inappropriate content on my website, and I'm hoping for an easier way to filter that junk without having to approve every single post that hits my website. Thanks!