I noticed that Wayne's solution involved using a text file. You can actually just upload the code given by http://maps.google.com and then reference it in an iframe. For example I entered Strathpeffer (my village), clicked on the "Link" link at the top right and copied the "paste HTML to embed in website" code. I then put this into my wiki bpage inside html head and body tags like this:
[[collapsible show=" " hide=" "]]
[[code type="html"]]
<html>
<head>
<title>Strathpeffer Map</title>
</head>
<body>
<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=strathpeffer,uk&sll=56.119424,-3.935882&sspn=2.17128,5.075684&ie=UTF8&ll=57.630699,-4.511948&spn=0.252765,0.63446&z=11&output=embed&s=AARTsJpxXVJWdboQWoJOosGBk_cmgUwGOA"></iframe><br /><small><a href="http://maps.google.com/maps?f=q&source=embed&hl=en&geocode=&q=strathpeffer,uk&sll=56.119424,-3.935882&sspn=2.17128,5.075684&ie=UTF8&ll=57.630699,-4.511948&spn=0.252765,0.63446&z=11" style="color:#0000FF;text-align:left">View Larger Map</a></small>
</body>
</html>
[[/code]]
[[/collapsible]]
And then referenced that html code inside an iframe like this:
[[iframe http://strathviewconsultants.wikidot.com/support:google/code/1 frameborder="0" scrolling="no" width="425px" height="350px"]]
which gives you the interactive map:
There is a lot more that can be done with this using the api.
Rob