I built a crowdfunding site called Privex (Private Exchange) back in 2007, sold it to a Chinese firm as a secondary market place.

It removed the concept of shares and replaced it with % shareholding, preventing unauthorised dilution. I also created a ZOPA market (Zone of Possible Agreement), meaning auto matching of buy and sell orders.

I did invest in IncuBus thru Seedrs, which was a startup Incubator based on a bus.

I still own the bus 😂