Readers who are annoyed with a website will usually go somewhere else and don't return. Usability experts tell us readers are typically annoyed by anything intrusive, unexpected, or cumbersome to use. Intrusive content Audio Web users hate having their favorite MP3s, CDs, conversations, or peace interrupted by annoying MIDI files. Anything that is changing distracts the reader. This includes anything that blinks, animates, or changes.
Web design is like painted art in the sense it works with eye movement.
A healthy eye movement is destroyed by content that changes right in front of the reader's eye. Anything that requires a plugin Very few users will be patient enough to download a plugin specifically for your site. It's a great way to distribute virii, bloat, and general annoyance. Stop kidding yourself and take out anything that requires a plugin. Even when it's obvious that a link will bring up a popup window, it's usually annoying.