Dominican government sites have a LOT of information, but very poorly structured, many boxes on each side of the main window with confusion headers and titles. A lot of unnecessary moving images that make it very busy. In general Dominican sites lack testing before going live, from small things (like username or password fields that automatically assume the first character is a capital, not well working drop down lists, and if they work they are very long, almost impossible to scroll. Try to search for 'aranceles' on the page of aduanas, you'll land on a page of which you won't have a clue what to do.
On the site of ADN you can find the rules of zoning for the city but try are all huge PDF, named with a unique letter combination which gives you no clue of what's inside the file, so you have to download a 25mb PDF to find out you need another of the 15 files on the list.
Examples of acceptable Dominican sites:
New website of banco popular
Claro (although it has it's flaws)
Emarket.do
Supercarros and supercasas (although the latter should get rid of the horrible landing page)
Anyway, partly it's probably a matter of taste.