We have received tons of positive feedback about our product, but we also want to have feedback of people like you. Can you give us the reason why you think this is not a practical solution ?

It's a combination of:

1. Keeping all your data in constant sync with a third party 2. You'd obviously have to do a sanity check now and then, even more code 3. Search isn't that important on most sites, 2.5% of visitors use ours 4. Trusting what is some of your most business critical information to a third party 5. Extra point of failure

We have an autocomplete (with all the 'reinvented' features you list), but it sorely needs some TLC to handle mis-spellings. I like the idea of that kind of easy to use auto-complete.

But on my server.

As I say, perhaps I'm not the target market.

Abacus is a pretty solid product, but the market seems a bit small...

Are you serious? Every business with 1 or more consultant or sales person deals with expenses and they're a right PITA for all involved (employee, manager, accountants), the market is huge.