Well this has been questioned since the beginning of this site advertising in this forum(I must Know because i am part of the signature campaign here in forum)
The main concern of the people is the assurance of this site will last that long? what if millionaire bet a million for 5 years event(though this is far from impossible) and then the site decides a closure year after the betting , how confident would be the bettors that the funds will be return?
Don't expect anything as we have no idea about the intentions or motives of the casino owners, few years from now.
So to play safe, bet small if you really want to bet on some lines here.
For long running items, if you are not comfortable, then don't. You can't blame them anymore if they are gone.
But hopefully, the futuur team will be active here as they are offering unique betting platform, wherein, some players do like a change of gambling atmosphere.