What are good scholarships to apply for?

I don't understand! Why would a scholarship be not so good? Anyway, there are various websites to help you find scholarships. Below there are several examples.

https://bigfuture.collegeboard.org/scholarship-search
http://www.collegedata.com/cs/search/scholar/scholar_search_tmpl.jhtml
http://www.fastweb.com/college-scholarships