I have purchased an automation press release piece of software which submits to a load of
pr sites which we have been using for a little while now.
This takes out the repetition but have found that it doesn't work on all the listed sites as it once did (the use of image confirmations blocks a lot of them) however it does submit to around 8 sites without problem,
if you'd like a link pm me and I'll email you, about $97 from memory.