obviously it is a pump like all the rest of the altcoins that have been pumped.
this past 10 days have been the days of ultra cheap altcoins to get pumped. i am seeing altcoins getting pumped that have been completely dead. coins such as MoonCoin and HTML5 both of which were below 1 satoshi and now they are worth 5 satoshi and rising.
as i have said before pumping a cheap coin like these to 500% is a lot easier to pump a big altcoin from 0.01 to 0.5BTC for example.
so no it is not going to last, try to enjoy the ride and make sure to sell on top and don't wait for them to dump on you!
So what should i do? Sell or hold? please tell me anyone
You have to read what people are telling you. The message is pretty clear: no one can tell you what to do and you shouldn't act based on someone else's opinion (including mine, strangely enough!).
The point being made here is that these alts are all pumped, with no real way to tell why or how their value has suddenly increased manyfold, except for the strong suspicion (founded in various threads you'll find on this forum) that their prices are a result of market manipulation.
This is pure profiteering so if you want to play that game, do so at your own risk!