New to crypto currencies, can anyone explain SIA and should I invest?

Basically the title!

I've invested a bit into ethereum ~1,5 month back which now turns out its a good choice so far.

I remember reading a comment on a altcoin's subreddit that investing in SIA is going to be profitable long term, can anyone explain to me why and whether I should invest in SIA or not?

Thank you for your time,

Uccino