Ideas for feedotopia, 300+ digg alike and 200+ bookmarking sites!

I was hunting for ideas for feedotopia, (in addition to what I have), I landed on this post on 3spots.
I had to say WOW! But sometimes I wonder why that nothing is better than digg to some, no most of the users. Digg is a good idea but it was not the first of it's kind. Only the part I agree is that it was done better than all other previous and current sites.
To all who thinks that digg is THE site, think about all the search engines before Google! I think I will work on 3spots work to gain some knowledge.

Tags: feedotopia, digg, bookmarking