My blog is all formed of text, I admired some portraits and added them to the blog to find its appearance has completely changed, and to my surprise the number of visitors sent by the search engines has markedly increased a few days after adding them. They will revise your site and I am not paid to recommend their site, and you can see how beatiful are the scenes here: http://www.waheedelqalatawy.blogspot.com/
A good design and interesting images can work to improve te user stickiness of a website. However, just make sure you dont make the pages slow by adding lots of heavy images. Keep the images optimized. Lots of images or flash files can also eat up a lot of bandwidth, so be careful with everything you do
Yes.. A nice looking ::clean:: design does create loyalty from visitors.. because it attracts them.. Even things as simple as a unique color scheme that really catches the eye or goes good with the content helps out with this.