It reduces lag for people kind enough to bump your glow thread. It makes it possible for them to click your game and then bump the thread while the game loads. Some people will refuse to bump if you don't do it!
How do to it.
Create your glow thread. I recommend shortpaging or clearing all but one post on the first page to minimize lag for your players. If you want to be kind to friends make a few pages of high trigger tanks on the 2nd page up to keep the grabbers happy after they finish your tank.
Once you're ready to open your thread click the reply box as if you were going to reply,

and copy THAT url to use as your link like this:

[url=YOUR REPLY LINK HERE]BUMP HERE WHEN I GLOW![/url]
If your signature hits the limit for url length, then use tinyurl.com to make it shorter
