I've had a lot of good luck getting press releases picked up using this service. Hitting the wire is an invaluable tool, and it's led to additional contacts from places I'd never plan to contact otherwise.
The only problem really is the cost. It gets really expensive for longer, data-driven releases. Review collected by and hosted on G2.com.
It's a very expensive tool. At times, it gets nearly cost-prohibitive. Also, the word count is insane - I understand that if it were a traditional wire, there would be a need to cut the word count down for transmission, but as an E-service, there is absolutely no need for a word count other than to balloon the price. Review collected by and hosted on G2.com.