Kakao have their main Korean-language blog here, with an RSS link here. It has lots of information on the company and the technical side of Kakao services like KakaoTalk and KakaoStory.
But if you want English-language information, which usually concentrates on new feature releases and promotions, their Facebook page is your best source of information. So, since they don't really have an active English-langauge blog, you can just subscribe to their Facebook page feed in your RSS reader, at this link:
To set your browser to use Naver as its default search engine (i.e. it will bring you to a Naver search results page when you type search terms in the URL link bar aka "omnibox"), simply add a custom search engine in your browser's settings using this string:
For example, I've recently converted some of my friends over to using Chrome instead of IE, but they want as "Korean" an experience as possible. Thus, in Chrome: Menu -> Settings -> Search -> Manage Search Engines -> Other search engines In the box for "Add new search Engine" just enter "NAVER" and in the box for "URL with %s instead of query" just enter the URL link from above. Then click to set it to "Default" and you're done. In Firefox there are various ways, but I prefer: Enter about:config in the URL bar -> find the entry for Keyword.url -> replace the string with the the URL above.
I personally also prefer setting the Chrome homepage to Naver's mobile site. That way you get the benefit of a Naver homepage with Korean news and predictive search while you type, but minus so much gaudy Flash clutter.