While you can do that I have always wondered why people just don't bookmark important websites like exchanges, casinos or online wallets and only access those websites through their bookmarks? If you do that you are going to save yourself a lot of headaches since you will know that you are accessing the correct website 100% of the time.

I know that from time to time websites can change their address and this can defeat the use of your bookmarks but when it comes to websites like the ones were talking about they try not to do this in order to avoid confusion and in the case that you do not want to bookmark websites like those you could always write the address in a piece of paper or in a file in your computer and just copy and paste it and get very similar results.