Having a WordPress account is handy for 2 reasons:
– You can get an API key for the Akismet spam filter.
– Your WordPress profile is used at Gravatar.
What is Gravatar?
“Your Gravatar is an image that follows you from site to site appearing beside your name when you do things like comment or post on a blog.”
Have you ever commented on a blog and noticed that other commenters have their image or site logo next to their name? On WordPress when you put your email address in the comments section, if it matches your Gravatar email, WordPress will automatically add your image.
When you set up a WordPress account, Gravatar will get you details from here.