Is there any easy way to buy either one of these with USD? What does everyone think of Followcoin? It is a new venture with independent artist Nipsey Hussle as one of the backers.
Not directly. Pretty much the only coins you can buy with USD are Bitcoin, Ethereum and Litecoin. So for example you could buy some BTC on a site like Coinbase, send it to an exchange that has TNT like Liqui, and then exchange the BTC for TNT.
I haven't used Liqui personally, not sure if that's a "good" exchange or not.
Florincoin is on Bittrex, which I can vouch for.