MYTHS #16  : Recommended candidates get recommended every time they go for SSB.

No. Every time the SSB look at them as a fresher only, but of course they keep an eye on these candidates.

MYTHS #17  :  The one who initiate or dominate the discussion is screen in. Also the one who conclude the common group story will be screened in.

Not true. But ones overall performance is watched by the testing officers for leadership qualies.

MYTHS #18  :  One can get recommended by doing what a recommended candidate did in his SSB interview.

Everyone's personality and psychology differs according to his lifestyle and experience. And that's why response should/can differ. 

MYTHS #19  :  In GTO test, if you get hold of the plank before the others, you are selected.

No. But you get opportunity to put up your ideas in these tests.

MYTHS #20  : Allahabad is a rejection centre and it does not screen in repeaters.

 Allahabad is in fact the best selection centre. If you get Allahabad as a centre, know that you are lucky and that you are going to make a lot of great memories during your SSB.