Hi,
How would you define a "good site"?
That could be a starting point.
I googled www.goodsites.com and came up with a spanish site, since I don't speak or write spanish so I'm not sure what it was about.
What category of content are you considering?
entertainment
pets
relationships
help people solve problems
Name the category(s) first, heck, you could create several each based on different interests and tell your audience why you think these are "good sites" to visit.
Also, what's in it for you (will you earn money with it?
and for them to visit your 'good sites' url.
Hope this helps.