I got an idea to integrate a WYSIWYG editor (which I will implement tomorrow) and from what I can tell, there are two that are currently in used most widely.
TinyMCE
FCKeditor
Any preference in terms of setup, ease of use and features? I was about to use TinyMCE, but FCKeditors appears to have file upload built in (whereas you have to buy it separately for TinyMCE).
Of course, if there is a better editor, I would be interested.
I am quite happy with TinyMCE and there is a Rails plugin that
simplifies the usage. If you use ActiveScaffold, it has a bridge that
you can use and have TinyMCE editing in practicly no time. The file
upload is AFAIK supported by a plugin fork
CKEditor is the successor of FCKEditor (http://ckeditor.com/). It has better features, performance and setup compared to their older brothers imo (especially if you are working with Ajax) and the code is cleaner.