Lol this is not fixable really ... Making a new program like that takes what ... 30 mins - 1h ? My friend used to fuck arround on my board with a prog he made that would post after a certain post (ex to win 4 million post etc ...) .
Its easy to emulate a browser ... somebody could just do something that type and press send and emulate the mouse like d2jsp did with diablo 2. ..
Anyways the point is : post bots are toally useless so whatever :0