Increased traffic to blog from Search sites

I find statistics interesting, and by using Google Analytics on my blog I get a lot of data from my visitors. The key information for me is the time people stay on my blog, the number of visits and where in the world my readers are located. The traffic is normally higher when I post a new blog post, but I have seen that recently the traffic to my blog is increasing also on days with no new blog post. And this is because several of my blog posts are getting hits from search in Google. This “top” search hits includes the following blog-posts:
Buy Google storage and get free Eye-Fi card!
Nexus One... why not?
Hacking a WD MyBook into a fileserver
Windows 7 is the best Windows since - Windows 3.1