Yeah, you bring up good points. I haven't set anything in stone yet. Maybe we do 2 picks. Maybe you have to be mining the entire round to qualify.
I had so many people try so many angles on the giveaway thread.
We ended up with
a) a set range pick for each and every one
as low as you want
-0.1
0
0.1
0.2
0.3
0.4
as high as you want.
b) at least on site for 2 months
c) at least 30 good posts
d) picks started at a certain block
e) picks ended at a certain block
f) I assign a pick if you make a non eligible pick
this set of rules helped the giveaway a lot. still not perfect but better.
so 2 coin prize
0
4
8
12
16
20
24
28
32
end at 96
then 1 coin prize
100
104
108
112
end at 196
if block goes over 199.99 no winner
this could work or a variation.
gives each player a 4 % zone and a 1 in 25 chance to win 2 btc the first 100%
gives each player a 4% zone and a 1 in 25 chance to win 1 btc the second 100%