[focus2020]

Item 14 says if -w3 is added the search result would be better. The symbol "-" isto filter out the results , but in this example whar does it mean to filter out "W3" mean ?

>img html

>will return inferior results compared to:

>img html -w3

[daave]

I take it the author is not a fan of w3schools.com, a web site that's been around for a very long time and is highly ranked for many html-related queries.

Personally I find most of their content to be pretty decent, so I wouldn't filter it out as a rule.

[from]

Perhaps it is referring to w3schools which produces web development tutorial that many find low-quality or spammy.