Buying a property for $0 down or little down

I've been entertaining this idea recently of approaching for-sale-by-owner properties and offering ~10% more than their asking price (assuming it was a good deal from the get-go), but then offering nothing down or say 5% to eliminate the sellers risk,

Obviously I know many sellers won't be open to this or like this but I believe some would, I wanted to get your guys' feedback on this, is anyone doing this or has anyone does this? What has your experience been like / and is what is your feedback

Happy holidays~