Hi everyone, I've been around for a while now.. 
I've seen a lot of posts positive and negative about Ethereum.

At the moment I am holding Bitcoins, but I have invested in some Ether as well.

Now I am wondering, what are legitimate concerns about Ether (except for IPO, as I've already read this in a lot of posts).

So can anyone bring real other issues to the table, to enlighten me (and maybe a lot of other readers?)

Thanks!