Tip of The Day is a plugin that display random tips, quotes, polls... for your users, in a widget.
=How can I style my tips ?= Use CSS ! There also are specific classes for your tips : -a poll tip gets the class "totd-question", -each tag given to a tip is used as class like "totd-tag-XXX" where XXX is the tag slug. =How can I change how the tip query is made ?= You can filter the query arguments with the filter "totd_the_tips_query_args" to modify the query arguments (show more than one tip, exclude some tips, ...) =How can I display custom content (eg. PHP code) in the tip ?= You can filter the content of the excerpt of a WordPress post using the filters "the_content" and "the_excerpt". Here's an example which uses the plugin BuddyPress Profile Progression to display a tip about how much the logged in user's profile is filled : http://pastie.org/1289904