One “account” I use is mailinator.com. It is a completely open account, so anyone can just check anyone else’s email without passwords, but it is great for making up a temporary email account name to log onto a site. For example if you need an email to read a full article, just make up a mailinator name, give it, look for any confirmation email there and then forget you ever had the account. The also keep a pool of other domain names for those sites than reject mailinator addresses.
Re: Mailinator...ditto that. It’s a great and free service.
I'll have to give them a try.
A lot of times, when I hit a registration box, I have no idea if I have an account, so I attempt to register with my Hotmail address. Half the time I get in with no problem. Sometimes, I get in and get redirected to one of those account profile pages. This is usually because I first registered years ago from a totally different computer, browser, ISP, etc., and they've long since expanded their notion of a user beyond just a name and password. So, I have to make up additional personal details, such as zip code, birth date, etc. As if they are important enough to need a user base with such details. They fail to realize that the only reason I'm back is that they happened to score high in a Google SERP.
What really annoys me is these sites that want you to fill out a survey about the quality of the site. You only just landed there because of a SERP, and they want you to fill out a survey about your user experience?? What morons!