My 2 cents regarding catcoin is that its another opportunistic coin, which will generate a following as being the "Cat" to Dogecoin's "Dog". essentially, the community is more serious than that of Dogecoin, the protocol appears at a glance to be that of Bitcoin so that's an improvement. Ultimately though, while I think its a good short term punt to pump n dump as I see no intrinsic advantage over Bitcoin, Litecoin and a handful of others.

If you're going to mine or invest in Catcoin, don't leave your seat because when the market tumbles I see no reason for it to recover. And the same goes for all the new alt coins, if it has no adoption, no distribution or means of becoming distributed and no fundamental advantage over what exists expect it to fizzle. If you want to make money from them, trade attentively and be early. 

Remember this too, Bitcoin is a protocol change away from adopting part of another coins standard that might make it superior. Think of Vine doing videos on a timeline and Instagram releasing the same features a few weeks later.