It's a legit site. If you're unsure then just create some random e-mail address on hotmail, gmail, ect and use that for it. If you don't like it then just never use that e-mail account again.
I think the problem most people have with change is that they want immediate change and at the same time fear that immediate change. But that just doesn't happen with huge things.
Take a wall for example. You want to move it back and you can push it all you want, but the wall is just going to sit there and not move. You then have wasted all that time and effort for nothing. You can choose for radical and violent change by punching the weak spots in the the wall...but this only breaks it and you have to rebuild it from scratch eventually (all that duct tape just won't do in the long run).
The way to move a wall is to disassemble it bit by bit and then move it to how you want it. Then reassemble the new parts in and you have the same core with a different outlook.