It may be that on the whole MAXIMILES itself is on the level, but it has links to some extremely dubious sites (at least, according to WOT they are; and I can well believe). Their sweepstakes, draws etc are an absolute waste of time: merely a surreptitious way of extracting ever more personal data about you - for whom? To what end? Whose business is this?
At its best MAXIMILES is merely hot air and hype; I'm sorry I ever wasted time by signing up to them. Remember that in this life you get nothing for nothing. Maximiles: the home of false pretences and data-trawling on the sly.
How gullible would you need to be? And why do they seem so keen to get me to sign up for gambling?