706 karma · joined February 8, 2013
Email: ernsheong [at] gmail
Wikipedia: [1] Turing proved no algorithm exists that always correctly decides whether, for a given arbitrary program and input, the program halts when run with that input. The essence of Turing's proof is that any such algorithm can be made to produce contradictory output and therefore cannot be correct.
The similar companies is purely industry segmentation, which can never be 100% correct. Different sites use different providers for segmentation and this is the best one I settled on.
If you don't agree with the philosophy, kindly move along, no need to downvote.
I hesitated for a long time too. One day I just decided to keep at it and launch.