I can't sell most of them because they are too worthless, I have to keep holding and hoping that one day they will appreciate in value, what I've learnt so far is every ICO and IEO projects will lose value at one point in time and may never recover, if you are not ready to hold for long term always take profit after ICO or crowdfunding is over
Yeah, rather than having a few bucks and getting almost nothing in terms of BTC or ETH, it is somewhat good to hold them for a little bit long time. I did that for a few of my ICO tokens. If these tokens are having volumes on exchanges, I think holding won't be a major problem.