Yer it's best not to bloat your HTML with to many Spans etc just have the relevant HTML tags. Try the technique that Chris above mentioned.

This is a good question and something I haven't looked into. From articles I've read I think this may be what you are searching for.

 <code>This is normal (X)HTML content that will be indexed by Google.

This (X)HTML content will NOT be indexed by Google.</code> 

Hi James,

Assuming you want to keep the existing setup but set up friendlier URLs (example, redirect ?p=1_14 to /p/1_14), you could do something like this:

RewriteCond %{REQUEST_URI} ^p=([^&]+) [NC,OR]
RewriteCond %{REQUEST_URI} &p=([^&]+) [NC]
RewriteRule .* /p/%1? [R=301,L,NE]

Then you'd want something to handle those new URL requests with something like this:

RewriteRule "^p/(.*)$" "/index.php?p=$1" [L,NE]

Hope this helps!