aiw

The answer is everything. You may consider this a flash issue, but there are conflicts mentioned elsewhere on this forum between altering the code and some plugins for WP and in some cases the basic WP installations, as you can read here.

But apart from that, I think this is a fairly common issue that should apply to the interest of both bloggers and users.

It looks like your friend gave you some sound advice.

If you need some help, you could try and ask an expert. He is known to help some free of charge and is familiar with both WP and Joomla!