Know the people behind them
It is critical to know the nature of the company and the teams behind ICOs. Most of the companies are newly incorporated, but many founders have been around in their respective industries. It is possible to review profiles and search for news and mentions in their prior projects and efforts.

Go for disruptive concepts
As far as the concepts behind these startups, the adage of offering unique and valuable holds. Due to the ease of holding ICOs, many startups have fallen into the me-too trap, where they only seek to be a better, cheaper, faster version of an already existing service. Unless they offer something unique, chances are these startups are just bound to compete rather innovate.

Understand the target market
It is important to put the company, their technology, and product or service in the context of their target market. They will inevitably be subjected to the market and regulatory pressures of their target industries, so knowing the environment should give you an idea of what challenges and opportunities these ventures face.

Evaluate the technology
One can also evaluate the viability of a venture through its proof of concept. Ventures with proofs of concept and pilot case studies are often safer bets. ICOs that offer nothing more than an idea bear significant risk compared to ventures that have proofs of concept already available for evaluation and testing.

Nitpick the white paper
A white paper serves as the company’s pitch to potential investors. As such, it should be well-written and substantial enough to provide compelling arguments on why people should trust the venture with their investments. Nitpicking the white paper could prove useful in revealing the details of how their solutions work and what need areas they will be addressing.

Know what the coins are for
Integral to ICOs are the coins or tokens themselves. Aside from functioning as the form of security (similar to stocks in traditional investments or initial public offerings), these coins often have other functions with the platform or ecosystem.

Filecoin, for example, offers a decentralized file storage solution. Users with spare computing resources can rent out these out and earn Filecoin tokens in the process. These token can be used within the platform or be later exchanged to fiat currency or popular cryptocurrencies such as bitcoin and ether.

I wouldnt choose an i ICO that has no product,no good developers and whitepaper,has no short - long term plans,no good partners and investors.

a very precise statement, this is a good choice and look at bitcoin movements this year, very surprising and beyond my predictions. I became impatient to wait a few more years 

Let me tell you that it is difficult to find a good ICO, there are a few good ones who are on this forum right now.

Take a look on VisaCoin, they are going to launch their pre-ico on November 30th, each token would be at $0,85 and it is probably going to be over $5 by next year, because a lot of people is going to invest in this project.

And the one who is in my signature is a good ico too, just take a look at the ANN, there is a lot of information in there, i will put at least $500 in that ico because i trust in their dev's.

It is not difficult to find a good ico, just take a look at what other people say about that one, and of course, take a look at their website and their whitepaper first.

I'm sorry to disagree since everything can be hacked nowadays. A good example of it is SONY, For sure SONY has everything to protect their servers. But they too didn't expect that their walls are already breached. In terms of carelessness, I guess it's part of our human nature. We are not perfect though. The Government can easily manipulate the market of Bitcoin, they apply laws to prevent transactions. The idea of Bitcoin is the future is very much enlightening but as far as I know, Bitcoin is still in the process of acceptance. Bitcoin is not yet accepted worldwide, even to those countries that accepted it, only selected businesses thus accept Bitcoin as payment.

So, it's going to get hard, now obviously but don't get got. Bitcoin IS going to go well over 500,000$ and honestly it might always be a bad choice during the duration of you lifetimes to ever convert your bitcoins back to clamshells, fiat or whatever your country offers. Don't do that.

HODL!

It's ALWAYS been a bad choice to sell bitcoin (in the history of Bitcoin) and it always will be. I truly want what's best for you loyal bitcointalk'ers and that's keeping your Bitcoin.