LOL. I can take full credit for it too, I used to do it in school so I didn't have to pay attention to all the coding necessary for formatting certain things.
Just remember that not all forums use a white background, some have cyan and other colors. So you have to play with screen grabs in MSPaint to grab the colors until you figure out the hexadecimal code for it, so they're camo'd.
"Poke and hope" usually fares well too.
Also, if you highlight the "blank" areas, you can see the text there (dots).
This has actually become a method of hiding keywords in emails and searchables, and has also become a way to help spammers do their job.
Pikac... erm. cfg83 - Thanks for replying the code, I forgot that part.