NO, you must not enter your email address account password, add-bus password is NOT associated with your email account.
Enter a separate password for your registered email ID, since your Email will be your username (also unique) to login to add-bus member area, your password should be different than the email address password that you have on yahoo, hotmail etc.

It is like paypal account, where you register your email address as your username/login ID, the benefit is, that if you forget your password, you can retrieve your password easily and without a problem, your password is emailed to your registered email address, and there is no chance of Hacking.

NO, not at all, add-bus business directory is for all type of companies, either you are a small company, medium sized company or a big company, you can offer to sell your products or any type of services, this platform is for whole business world.

Please check other Business categories, we have tried our best to cover all type of business categories.
If still your company does not fit in any business category, please Suggest New Business Category, and we will create one for you.