at the first year of foundation of codeforces, more than 100 contests taken place, and at the second year 50 contest, and now less than 50 contests...! last year, there was 1 or 2 contest per week but now 2 or 3 contest per month! I think after a year it will be 1 contest per year!!

UPD: finally one contest has been added! hope to see a full list of contests! thanks! :)