currently all the working implementations of solving those capchas I've seen based on sending them this capcha's pics & description what to choose from this pics.
the main problems i faced - in page's source code(or in js containing that text, don't remember now) the text usually changed to the format i wasn't able to decrypt, so unable to get text description of capcha's picture.
If someone using this services - how do u getting the capcha's description?