Hello,
Content sliders are nice to have but most allow you to slide through a series of images (with the text embedded in the image). I've recently been using AnythingSlider (http://css-tricks.com/anythingslider-jquery-plugin).
This allows you to construct a slide using HTML, that can be crawled by search engines.
The method I use is I set an ID for each slide (eg: id="slide1") and use CSS to apply a background image to each slide. I then set position:relative for each slide in the CSS and add in any HTML I want into the markup for the slide. If I want to absoutely position elements on a per slide basis I can do (this is because position: relative is applied to each slide in the CSS).
EG:
The CSS could then be applied as follows:
ul#slider li { position: relative; }
ul#slider li#slide1 { width: 960px; height: 300px; background: url('/images/slider/slide1.jpg') no-repeat; }
ul#slider li#slide1 h2 { position: absolute; top: 125px; left: 50px; margin: 0px; padding: 0px; font-size: 1.8em; }
ul#slider li#slide1 p { position: absolute; top: 135px; left: 50px; line-height: 1.5em; font-size: 1.2em; }
More information can be found here: https://github.com/CSS-Tricks/AnythingSlider/wiki/Usage