I would say the advice should be: don't offer equity too soon. I've met some random "business guys" at conferences who offer me an equity stake in their startup

I would say the advice should be: don't offer equity too soon. I've met some random "business guys" at conferences who offer me an equity stake in their startup within moments of meeting me. That smacks of desperation and turns me off. It's like dating, the legit business guys who've interested me have got to know me first before discussing startup ideas. In particular, offering equity as part of a freelance arrangement is just dumb all round. It's a lose-lose situation. A freelancer wants cash, not lottery tickets in your non-existent startup. And giving away a chunk of your company to someone who's only going to be around for a few months hurts you too. I know there's one UK startup that was founded that way (built by a web agency that got a chunk of equity) and it caused no end of problems. Either get a co-founder who's in for the long haul and reward them with equity, or get a freelancer and reward them with cash.