Having run a personal snipsnap wiki for a number of months, I have got to the stage where I want to use it as a host for a couple of mashups. Fortunately there is a user contributed macro that allows for the use of HTML within a snipsnap page. Otherwise, because the page input screen interprets a markup language, all HTML is treated as text. This macro is installed by copying it i.e. the .jar file to the directory named in the Java CLASSPATH. It really is as simple as that, and then using snipsnap's macro syntax. You can also see what I have written at my bliki.
<SPAN STYLE="color:red">This font is Red caused by a Span tag pair</SPAN>
This has allowed me to embed a google map in one of my pages, the example below is about Brussels.
and the example below shows a del.icio.us tag roll.
tags: Technology snipsnap html css googlemaps tags wikimarkup mashup