Jimdo allows you to add on module in the sidebar. Just navigate and add your stuff. Here is an example of my phpstuff that allows people to find hotel in their countries. Readme at which is actually a php file with embedded affiliate link in it. Users tend to not bother to remember a long url and just go away for another blog. Catch them here with your useful link.Tell them what you provide in a click away. Here I sell my vrms, vacation rental management system for vacation rental owners. It's a lot of homework at first, look for some usefull datafeed that contains the relevant information. Then I write a small php code in 5 lines to read the csv file..comma sepated values, csv. Any text editor or excel can read it.