Should I use automated posting services?

I usually don’t advise in using programs to post automatically unless the content changes and updates to provide value. I have a habit of looking at person previous posts and if I see mindless repetition, then I know it are a “fake” and ignore it, if I see valuable posts I follow them.
Recently, I got a Twitter mention from a service that picked up on the post about Tower Records, they send me a map URL of nearest Tower Record store on their site. Needless to say it was a total miss. 

Uki's Google Java Technology blog