I use ethereum for invest in ICOs, buy altcoin in crypto exchanges and I hold some of them as long time investment.

Ethereum as the second large crypto, it has much more useful than other altcoins.

I will keep tezos for more than 3 years, not only 1 year. As the week market now, most of the altcoin are willing daed. Only the great project will servieve.

And I think tezos is on the top of the list.

Maybe 2020 is the year that crypto recover back and in a new peck! But it means that it needs more than 17 months to see that happen. It is a long time in crypto. I think only a little people will hodl until that time, and only a little project will surviual in that time.

In my opinion, team member's information are one of the most important aspect to a project or ICO, I don't join a project that their team members without a good background, not even without team menbers' information.

That kind of project must be a scam.

If I can just recomand you only one altcoin, that must be the tezos. Tezos is one of the biggest ICO in 2017, although something in foundation and develop team, but it still one of the best project in crypto.

You can find more information with google about tezos.

First, you should check your altcoin in coinmarketcap, if it is exist on that, you will find out which exchange it listed on. So you can sell them on the exchange.

Second, if it not list on exchange, you can exchange them with others who want to buy it .

Maybe the price will go up, or it will goes down. But I don't there are some relationship with hold or sell. It is depands on the project. If the project is great, I think it will rise back.

When bitcoin's price rised up, altcoin price didn't rise, but went bitcoin price drops down, altcoin price drops as follow.

The market is so weak, I think it went recover back before the end of this year.

Yes, and I think maybe the persantage of scams in ICOs is higher than 80%, maybe 95% of them are scams. As so much scams break, and so much icos break the ico price, we see that most of the ICOs can't get money right now.