A promo is TV lingo for a commercial for a program like E.R. It sells your audience on the idea that they should watch your program or newscast. Yes, they can be annoying, but they are very effective and can drive an audience to your program. A PSA is a commercial for a community event or service. It's an announcement for a parade or a holiday food drive. It's an excellent way for a non-profit organization to get some exposure without paying for expensive broadcast time. Saber Productions Inc. has extensive experience producing promos and PSAs.