I don't like the business model of Hashflare, limited contracts to one year are not customer friendly and their bonuses were also not helpful. People investing during the bonus phase made a huge loss, avoid Hashflare! I don't recommend this company.

There are much more better opportunities to earn from mining. Some companies offer mining ICOs where you buy tokens and receive the mining dividends in your wallet where you hold the coins. So these coins work like contracts and are also not limited to a year, it's lifetime and you can sell them later like normal coins. This better model is a big advantage compared to cloudminers.

Here I've made a list of ongoing projects: https://bitcointalk.org/index.php?topic=4907656.0