How many traffic from events?

For example , today is earth day , even the Google logo was changed , and at all the events , the logo changes and if you click the logo , you go to a search page like http://www.google.ro/search?q=earth+day .

First result at me is ww2.earthday.net/ , after that wikipedia and earthday.gov ...

How much makes the first sites from that search ?
Maybe ever person clicked atleast once on the Google Earth Day logo ... That's lots of visits

 

I think it's a good niche, but guess you should somehow limit the events by smth. I provide event info, separated by countries/different sites/, but do not get much traffic from these, neither this is sites' main purpose... However, from few international events I've got good traffic and sales.

 

but that it's only for one day...

then what?

 

then who cares ? You still get ... millions of uv

 

put opt-in and catch lots of subscribers for the whole year....