Twitter auto posting question

I apologize as I am sure this has been asked here a lot and most likely is common knowledge but I can't find an answer via the search function.

I have a wordpress site which I want to link to my 30 Twitter accounts to spam my site. I would like a plug in for wordpress that automatically sends a tweet each time I make a new post on the WP site. It is all time sensitive material so I need a plug in that will send out a tweet to each account instantly and allow me to do so for all 30 twitter accounts.

I tried services like twiterfeed but they dont seem to work all the time so hoping you guy can let me know of a better option.

Thanks for your help,
LVScott

Anyone?

Its not a common knowledge and is not asked before, at least not here. I used plugin RSS2twitter before, not sure is it still working but check it.

Good question!