My first trick or you can say its bug of Google's Gmail accounts - The bug suppose your log in ID for gmail accounts is :- test1234 and you press by mistake dot in between i.e. test.1234 and after that while typing password you do the thing again i.e. suppose your password is password and your type pass.word you will shocked to see that still you will be able log in to your account that's the bug of Google. I cam to know about this while i was trying to make a new Gmail account and i was trying to change the availability of username by putting dot on different position between characters however no username was available also once by mistake i press dot while pressing password and Gmail gave me positive response for that. Feel happy that i was able to take out one bug from Google :)