I want to state that this article is my opinion and not a financial advice.
It is without a doubt that ICOs are the hottest merchandise in cryptocurrency markets from 2017 and it seems 2018 will be even crazier despite "the crash". Even big companies like Kodak and Telegram are amazed by the money involved and want to have a piece of the pie too. It's ultimately up to investors to decide if the token sale is good or not.
When are investors deciding on investing into the crypto startup they usually look at the team members, their experiences, how the site looks and how much the ICO is engaged with the community. Another way is to discuss it on Bitcointalk or in various Telegram Groups. There are other ways where to collect pieces of information about the ICOs like token sale lists etc. Obviously the most important is the company whitepaper which you should always double-read. But we are here for Telegram groups, right?
...and Telegram Groups are the thing which interests me the most. Info there is hot as a mug with silver.
ICO Countdown
Probably the biggest ICO related group which offers discussion. Admin is also promoting his favorite coin. Rules are very strict.
Upcoming ICOs
This group shares lists of ICO which are going to be released - a great way to be up to date. The only drawback is that you can't contribute. Or maybe it's a good thing.
Hot ICOs
A young and agile group where the owner posts his pick for the day. The tips are usually unorthodox but to the point. The discussion between users in this group is mostly unfiltered.
ICO Reports
ICO Reports is a one-way information channel which doesn't offer any discussion. The author is publishing various ICOs which he finds interesting. Your discretion is adviced.
Hot Pre-ICO Sales
The same stuff like Hot ICOs, but aimed only at discounted token presales. Pre-ICOs are a good way how to snag an undervalued token which can be flipped later for a much higher price. The discussion here is very civil.
ICO Insider Channel
News and information related to token sales. The discussion is disabled.
ICO Insider Comunity
If you want to chat this group is from the same guys like the one above, but with discussion enabled. House rules are strict, but make the place good to be.
Real ICO Projects Only (4x profits)
Small group with a little scammy title, but worth visiting. It focuses on risky token sales and presales.
I feel like I've definitely missed some ICO Telegram groups so feel free to add them in the comments. Also, your opinion is valued.