A G.

I have participated in several different crowdfunding platforms and it is SO refreshing to participate in one that is:
1) organized!
2) communicates a step-by-step investment timeline on your portfolio page so that you know at a glance where you are in the process with each campaign
3) has customer service that responds in a timely manner to email inquiries/requests.

Start Engine also tells you upfront *before* you invest if a campaign is already oversubscribed. There are some platforms that do not, but hold your money for MONTHS after a campaign has ended before telling you that you didn't make the round due to over-subscription, which is beyond unprofessional and unacceptable. But with SE, there were two startup companies I had changed my mind on after further due diligence and I was able to request a refund before the campaign closed and got my funds back quickly. THAT IS REALLY IMPORTANT!

The ceremonial "Ownership Certificate" that Start Engine sends the investor with a CEO signed agreement is a very nice touch as well.

I give StartEngine 5 stars! They are head and shoulders above the 3 other crowdfunding platforms I have invested with in the past.