Share 'Please review. Are we making something that is useful?'

Hi, Since most of you guys are experienced tech-people, can you please have a look on our business? Are we making something useful? Please bear in mind that it's still work in progress and we're still working on a lot of the parts. Just curious if we're on the right track. Links: http://blindoptimists.com Invitation code: bos.sandtable Thanks in advance.