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THIS DAMN FIREFOX IS A DAMN BULLSHIT OF BROSWER BECCAUSE IT IS ARRIVED AT VERSION  49.0.2 AND IT NOT SINCRONIZE CORECTLY NOTHING OF THE BOOKMARKS!! IF ( AND HAPPEN SO MANY TIMES) IT CRASHES IT FORGET THE BOOKMARKS WICH WAS SAVING/EDITING AND YOU NEED TO RE SAVE EVERYTING IN BOOKMARKS SECTION, MANUALY ... THIS BROSWER IS A SHIT............ CHROME SAVE/SINCRONIZE AND WORK GRAT !! AVOID FIREFOX IF YOU HAVE MORE THAN 100.000 FAVORISTES BECCAUSE IS A HELL WITH LATEST VERSNION. THE ALTERNATIVE TO FIREFOX EXIST SO TRY THEM. UPDATE !!! - 1 TODAY I DISCOVERED THAT IF YOU HAVE MORE THAN 50.000 BOOKMARKS JUST THEYR DAMN SERVERS WILL GO IN ...TILT ...AND NOT WILL SYNC NOTHING FOR DAYS OR MAYBE YEARS ....AHAHAHA 10 + DAYS JUST TO LET THE MOZILLA TEAM SUPPORT TO UNDERSTAND THAT YOU HAVE TOO MANY BOOKMARKS TO SYNC ON THEYR POOR SLOW CHEAP SERVERS.... IF YOU USE CHROME IS A GOOD CHOICE AND LESS HEADCACHE OTHER THAN LESS LOST OF TIME AT ALL. FIREFOX IS A EPIC FAIL AND DAMN SLOW. IT FUTURE IS SHORT. AVOID TO MAKE DONATION TO THIS SOCIETY , MOZILLA NOT DESERVE A DOLLAR.... JUST OLD IDEAS/PROJECTS RELOADED AT INFINITY... UPDATE - 2 IN 2020 THIS SHIT OF BROSWER NOW AT VERSION 75 IF YOU HAVE SO MANY BOOKMARKS AGAIN NOT LET YOU MAKE IT USAGE A PLEASURE... IT NOT REMEMBER THE POINT YOU SCROLL IN THE FAVORITS SO IT RESET EVERYTHING... IT IS SLOW DAMN SLOW TO SYNC THE WEBSITES AS FAVORITE.... IT NOT LET YOU CREAT ISTANTLY A NEW FOLDER AND SO ON... FIREFOX NOT CRASH AS CHROME DO, BUT BOTH ARE FULL OF BUGS NEW AND OLD BUGS ... BOTH BROSWERS ARE JUST SMALL SHITY THINGS WITH OLD IDEA AND NEVER A REAL NEW IMPROVMENTS, JUST TAKE A LOOK AT THE CHROME INFERFACE... IT IS SAME YEARS BY YEARS....