In the world of design both seeing and sometimes hearing is essential to your web experience. If your site is lacking in either, your design might be impaired and the visitor might be compelled to leave.
Visually engage your visitor:
Stock photography might be the answer to a visually impared website.
Example: http://www.ccinyc.com/

A web design company stuck in the past using old styles and very old techniques. The designs could be bolstered by some visual inspiration. TIP: You are a designer, show of you skills, your portfolio / blog should be a good representation of what you can do.
Example: http://www.august.com.au/services/

This site is quite impressive visually, but it doesn’t over stimulate. It shows that the company is professional and has a good style.
Here are some stock websites for photos. If you do not have the means to take the photo yourself, see if they have what you are looking for. Never under estimate your scanner! You can create some pretty cool effects by scanning things in!
http://www.sxc.hu - wonderful stock website, chocked full of good photos. Best of all its FREE (but you must check the terms of usage!)
http://www.stockxpert.com - The pay counterpart to stockexchange. Great stuff at good prices (avg price is about $1 for a small photo)
http://www.istockphoto.com - I really only use this if I can’t find what I want on stock expert.
More tips to come. (I’m gradually making these for my class. lol)