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Webmaster Rick...or anyone...

I've heard some mentions of using login to protect your user name. I clicked on it, and saw a place to enter name and password. So, if you've never used login before, do you choose a password then? And, are there any other advantages to using login? I may want to start doing that. I assume you would then login each time you accessed the site. And, if you don't use login, then anyone could make a post using your name, right? But, if they did, the name would be followed by numbers or browser info that could show that it is a different person, such as when AZ Mike recently posted as Katrina and others.

But, some people who post here don't have their names underlined, so you can't click on them to send them an e-mail. How does that happen? Sorry for all the questions, but I'm almost as new to the internet as I am to this forum. Thanks for any help.