Siacoin is one of my absolute favorite cryptos at the moment. Currently, it's trading at just around $0.02. Right now it's market cap is roughyl $556M USD. There are a coins with a much larger MC and much lower potential than Siacoin (SC). I think Siacoin is on track to completely disrupt the likes of Dropbox and Google Storage Cloud. This service offers completely decentralized hosting of your data, that is only avaialable to you. It works by having people rent out their hardware storage, in exchange for Siacoin.
Along with the above statements, Siacoin has an amazing Dev team. Their founder just announced a new game changing partnership called Obelisk, which we don't know much about yet, but will be released in full detail on Friday. I believe this partnership could be a massive hardware deal used for mining SC, and could be with the likes of IBM, NVDA, or AMD. This is just my prediction, but whatever it is, it will be a large announcement.
I think Siacoin is one of the best buys you can possibly make today, and I recommend doing so NOW.