Hello, SEO friends! Hello, Non-SEO friends, too!
Let's think about it:
How many SEOers are there? According to the certain types of SEO: White, Gray/Grey, Black and Green, we should make the conclusion that there are SEOers as follow:
White SEOer(-s), Gray SEOer(-s)/Grey SEOer(-s), Black SEOer(-s), Green SEOer(-s). Are there some other types of SEO (and SEOers)? If you know, you may share it with us, over here. Thanks for reading and thank you in advance for your cooperation!