Partly a blog, mostly a comprehensive information site about Rio de Janeiro and the area around. Yes the inclusion of the word 'gringo' conjures up certain negative images (until you get to Brazil and realise all foreigners are referred to as 'gringo' in a purely friendly way), but it's jammed full of great tips you won't find in any guidebooks and gives an enticing and realistic picture of Rio. I met the author of the website in person at the hostel I stayed at and he was an absolute gem!
www.gringo-rio.com/
Google map: bit.ly/ctjD3Z
Is this your business?