I'm pretty sure posts like that are against the usage policy (I haven't looked at WhatBird specifically, but most forums are that way). That's why the "Report Abuse" link is placed under each post. Just report the post, and hopefully, the mods will remove the offending account.
As for the stalling, I've noticed it too, but I don't think I've seen it as bad as 20 seconds. I wouldn't say it's typical for most forums, but I might be able to explain where it comes from.
All of the web pages you see on forums and bulletin board systems like this (as well as most modern web sites) are created in software, instead of being fetched from regular HTML files. The software is written in a computer language suited for web applications (Microsoft ASP in our case), and each time you click a button or link, a small program is run on the web server to generate the appropriate web page in your browser. Much of the content for the page (the actual forum messages and photos) is fetched from a database, and then additional code is run to apply the styles and other visual elements to the main content. The benefit of this is that you can store a lot more data on the server's filesystem than you could if all of the content was in regular HTML files (think of all of those posts in the ID forum!). The down side is that it typically takes a bit longer (though usually not that long) to fetch the data, run the code, and create your web page. It can be better or worse depending on the speed of the server as well as the speed of your internet connection.
@Flipabird: I'm not sure why the delay seems so bad for you, but maybe the explanation above can give you some insight.
EDIT: I just realized that I've got two threads merged into one here. I hope you all are seeing this message the same way I am.