Red boomerang UFO

Red boomerang UFO first time for visited on 6 March 2011. Since March to April this year, They came 6 times in different days. On 5 April three of them came together, one showed vibrated itself, Is this their way for communicate with me? 
Related article: http://ufo-spacelife.blogspot.co.nz/2012/01/black-boomerang-ufo.html
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