5. Excessive Advertising
It's fine to monetize your blog or use affiliate links, as long as they are not intrusive to users and overshadow useful content. When ads appear all over the page and even in the middle of posts, the user experience suffers. Avoid contextual ads -- programs that highlight words in your posts to make them look like hyperlinks, but popup an ad when they are rolled over with a mouse. Just like having items appear clickable that are not has been a usability issue, so is tricking users into clicking on ads or viewing ads when they appear to be hyperlinks.
Ironično, zar ne?