The maximum tax quota is 60% by the Correios, which is simple Taxing, the other quotas are from 1% - 50% depending on the product type.
What happens a lot of times is that the business guys want to say that it's "too hard" to do business here where it actually is pretty easy, not too much taxes and a great market. There's the employee taxes which are the most expensive but some of the taxes you can get back if you're smart enough with your accounting.
It's a great place to live and to have a business, the best part is that Brazilians like new things, when you open your business everyone is coming in to see what's it about.
The concepts behind Sharepoint are really good, it's a fully fledged framework, CMS and has a bunch of plugins for it.
The downside dough is that it's all good when you start, but when you get into more details of your requirements you end up figuring out that it cannot be done in this framework, then you endup doing it outside of it due to it will not meet your needs.
OBS: You'll always find some bug that no-one found it till today and you'll be the first guy with that bug once you get there, by then you'll be into 85% of your project. Sometimes you'll find bugs that will be solved "in the future".
If you're into Javascript and JQuery I recommend NodeJS, it's rock solid, very fast and lean JS Framework for Dev, it's server-side. It will certainly be a bootstrap for your project. You can get a hello world running in under a minute, once you get a hang of either Express, SailJS or Meteor you'll have a happy project and time/effort.
The "meshing" idea behind Duck Duck Go is great, but it's search results is not what a user needs everyday. A user needs results sorted out in cultural domains, based on their usage and culture you can get results that is proximate to what someone is thinking.. based on linkage and facts that makes the result of the query.