XPression DataLinq™ and Dynamic URLs

Using RSS feeds or other HTML data sources used to mean that you need to create bunches of DataLinq™ sources. Not anymore!
With the new Dynamic DataLinq™ URL feature, its possible to use one DataLinq™ source, and a pulldown menu to dynamically change the URL to point to different URLs, by substituting part of the URL path with simple pull-down lists or other User Input Controls. If you know how to use DataLinq™ keys, your are a step ahead if not, review XPression U tutorial DL103 about DataLinq™ keys to become a power user of the new Dynamic DataLinq™ feature in XPression version 9.0 or higher.