Hi rtdcs,
it's easy - the next time you upgrade your hashpower use the promo code in this post and leave a comment what and how much you upgraded (for example Dash x11 for 10 Mh/s). I'll comments daily and add you to the bot.

You will receive upvotes for your posts until the mining contract runs out (for example 2 years for Dash x11).

I'll add another post tomorrow to explain the process in more detail.