i have made a tool that scrapes forum posts and then adds to my forum
i used many of the libs form that book, check out the website for the book and all the tools you need to build you scrper from are there
also you will need to google a few examples of loggin into a site, extracting certian post keys and then using these in your curl script
the basic process is
first go around registering accounts on various forums (most use capthca)
make a little function to
1: login into the forum with your username - password
2: extract any post keys or session ids
3: then post up your new topic ( or comment on existing threads)
take alook at the auto form commenter i posted up in the tools sction, this just coments to random threads in vb forums
you can very easily modify this to post new threads in stead of commenting on existing threads
the problem is tho if your spamming rndom crap, its easy to hide in exisitng posts, instead of starting your own new threads
i'm just working on my forum poster now, making more funtcion s to post to other forums including vb, phpbb3 and smf
if you make any more scipts or addons post them up here for sharing or hit me up to share some of my tools