I understand that you are planning on providing more content directly to them to reduce the bounce rate,
I came to the realization that people visit my site to 'check' or to see if there's any 'new info'. my bounce rate is 54%
I don't know what analytics program that you are using but I assume you verified that this is the bounce rate of returning customers? (I would think about them as customers in the end you want to sell them something).
Lots of pictures on your pages will probably slow down your load times, cost you ranking with google (it is now part of their algorithm), and actually increase the bounce rate. I am basing this off some testing of my own, Some of course may be super cool, but a lot is almost certainly going to cost you.
I would suggest if you are not already signed up on google's webmaster tools that you do so and take a look at the labs area for site performance. As you transition over you can also see how google rates your load times.
What I would do before I changed anything... Use Google's free Website Optimizer with 2 pages of your most popular content.
1) "New" page with the kind of look and feel your updated site will have.
2) "Old" with basically the same info sans pictures.
3) Drive traffic using PPC to see if your stick rates are higher or lower for different configurations, etc..
I really suggest that you think about your visitors as customers. I could be selling Blue Widgets but find from keyword analysis of visitors that they all want Red Widgets. I can try to sell them Blue Widgits all day long, but in the end it is a lot smarter to sell them Red Widgits.
Try going through the logs on your keywords and then try this little exercise.
Who is my customer?
Male or Female
anything else you think is relevant
After you finish take a look at quantcast to see what they say about your demographics. Change your picture if you need to or select a large subset that has money to spend.
Build up a picture in your mind of your that customer, give them a name and imagine them going to your site.
Look through your Keyword Logs again,
Ask yourself this question, "What is my customers end goal?"
Why are they spending their time to visit your site?
How does your site fit in to their goal?
What are you doing to help them to take the next step toward their goal?
How can you do more?
Are their more steps you can provide?
Finally when all that is out of the way you are ready to ask, how can I monetize that?
- DVD instruction manuals - http://www.kunaki.com/ will accept payment, drop ship materials you make for you. Or you can find an affiliate program, but I would suggest making your own product as it will make you a lot more money.
- Membership VIP site with special resources not available to those who do not pay you... I have heard that the wishlist wordpress plugin is good.
- Amazon also drop ships physical products and processes credit cards if you join seller central. Amazon takes all the risk on chargebacks etc.. I would definitely test this with an affiliate program first but if the demand is high, and charge backs low, it will be worth your time.
With the traffic that you have there will be a way to monetize, believe it, test it as cheaply as possible, (like with polls on your site), and do it.