There's already
Airdropalert.com. I've been in several airdrops in the past, some were worth it, some aren't worth anything.
It would be really nice to have a site with complete information, including a field to enter your current holdings for airdrops based on Bitoin balances, but for many airdrops, you can only know it's real value months later.
It would also be nice to have a complete overview of how to join, from instructions on how to install the best wallet to where to sell tokens. I see a big problem though: once you have a nice site like this, and you make it easier for more people to join more airdrops, you'll be overloaded with more new airdrops, which makes it harder to pick the valuable ones.
Another idea just popped up in my head: Dust to Charity!
I've had (and still have) many different altcoins, all barely worth anything, and for sure not worth the time to figure out how to sell them for a few pennies. I imagine many people have this "problem". Wouldn't it be nice to create a website where you can just upload old and almost empty altcoin wallets, after which the site collects them, and once worth it, sells them to donate the proceedings to some (crypto related) charity?
I'm aware of Airdropalert but I was thinking about making something that contains more information's (much more) just like you suggested. Dust to charity looks like a good idea but ...I may not do it. Charities or non profit organizations usually accept BTC, Litecoin, Dogecoin or ETH at maximum and If people donate less known currencies, I will have to manually search for the exchanges and then trade them for BTC or something else, then donate them which will make somehow the whole process less transparent and hard to track by the donators.
I think it's a good idea to do something around ICO's, but there are already enough websites that are offering news and info about airdrops.
I'd personally be more interested in a website that provides accurate information about the ICO's, without doing paid op-eds.
Have every ICO thoroughly researched and asses the viability of the project and give out more information about the team members.
You'd need a lot of writers though if you are not planning on adding content yourself.
There are a lot of ICOs, I'm not that good at doing in-depth reviews so I must hire a big team to do so. I don't think I will go with this.