1) The word "microblogging" threw me off -- for some reason, I hear "blogging", and don't realize it's meant to be a twitter clone.
2) Maybe it's just me, but the full page image of the woman on your landing page makes me want to close out rather than engage and find out what the product is. I'd rather see top peeps immediately, with a partial landing banner for new users.
3) I think the most critical task for a product like yours is curating a good community. With twitter already existing, how do you intend to avoid turning into a boring graveyard of crypto shills (like Steem) or a Gab-like place filled with only people offensive enough to have been banned elsewhere?
4) Otherwise -- it looks great! I'm on the waitlist...how long before you send out more invite? :)