I definitely think this kind of service will become standard over the next few years. To the point where one day we'll say "how did we manage without it?". The next generation will say "so you logged onto EACH bank account individually?! How did you keep track?"

I think currently the main issues stopping swathes of customers signing up to such a service is the unknown trust & reliability factors.

Your copy really has to hammer these two points home and these issues have to be the centre of your business.

I think currently your site layout feels a little like a blog and it also has no brand identity yet.

If you do some comparisons between Mint.com and your homepage. Not to copy them but to see how they convey trust etc.

Top half of their page hits you with "FREE" & "EASY" while the second half is mostly a giant padlock & a list of security features. Do a bit of surfing to companies websites that have a trusted reputation & see what key words they are using.