You can usually vote every 12 hours, some sites may be 24h. Vote rewards are shown below.
The top voter each month will get 3x Diamond Crate keys and 1x Festive Crate (whatever festive event it is at the time, e.g Christmas)
Also attached is our weekly reddit post and forum post. We encourage leaving a comment on those posts containing a quick review- it really helps!
For each vote you recieve 1x vote key! This can give lots of cool ingame rewards, maybe even more keys!