The one number you should know about your equity grant
cdixon.org
cdixon.org
You may own 1% of the company and the company sells for $100M... that doesn't mean you get $1M. The investors may very well have preferred stock beyond that and you end up with nothing.
Understanding the WHOLE picture is very important for anyone joining a startup. Unfortunately this is a big topic with a lot of stuff you need to understand. You owe it to yourself to know it.
For the vast majority of employment decisions, it's my opinion you should basically just ignore stock or option grants.
I understand that it's hard to say because it depends on a lot of parameters, but I did ask what percentage of the company I was getting and I have a hard time knowing if it was actually good or not. Should I get around 1%, 0.1%, 0.01%? I don't know and it makes it hard to argue I deserve more options.
It'd be interesting to have a service like Glassdoor for the stock options part.
http://venturehacks.com/articles/share-price
This argues that all that matters is share VALUE, not percentage.