Aree long weekend pani m leka , chana rojula  taruvatha chinna code rasaa , offcourse it takes around 10-15 min but just for fun .... https://github.com/afdb-sollu/block-users this is chrome plugin ,  download above code(unzip) and place somewhere in your computer , open chrome and goto settings > Extensions (from left side menu) and choose developer Mode (from Top right). once you choose developer mode , chrome will show few buttons , choose  load unpacked and choose the code