Coincidentally I noticed that both Simple and Square do not mention anything (anymore) about who they are. No about page, no team page, no nothing. Especially with companies that are all about your money, I'd at least like to know who's running the shop.
Since it's pretty much the standard for startups to tell about themselves on their web site, this must have been a deliberate choice. What advantage does it have – especially in the case of Square and Simple – not to show who you are?
We had a "team" page on our previous site (under the BankSimple name). We plan on revising and reviving that page, it just didn't make the cut for our updated site for the Simple rebranding.
I like knowing who's behind the products and services I use too.
It's probably to do with image, particularly how that looks to ordinary consumers. If consumers look at a bank/payments company and see it is run by a small team of 20/30 something geeks, rather than wall street types they might be anxious about letting them take care of their money.
I noticed this as well, but I was able to see the team over on their Jobs page (and get a little bit of information about them too). I don't mean for this to be a solution to what you have brought up, but if you want to see something about them now it's a start.
Since it's pretty much the standard for startups to tell about themselves on their web site, this must have been a deliberate choice. What advantage does it have – especially in the case of Square and Simple – not to show who you are?