A couple things to keep in mind about the glowing usernames is that most of those functions (glow, shadow, a couple others I can't remember) only work in IE browsers and not in FF, Safari, or any others. They use Microsoft custom functions that no one else supports. For example, on the left is IE, the right FF:
See how my username in IE looks better?
That said, however, there are a couple of caveats like you have to buy something other than just glow or else it won't be seen; also there was some issue with a couple of colors (I think the default color, and black?) that has various issues with some of the extras that you could buy. If you have not changed the color of your username, or you changed it before you bought the glow, try buying a new color and see if it appears suddenly.
This is the post from a while back on how to play with colors. I'm guessing that most or all of it still applies, other than maybe the PS stuff, and the demo site link in there doesn't seem to work anymore. It might help (or it might not tell you anything you didn't already know...).
*edit*
Another thing I just noticed which could also be part of what you are seeing. While the effects like shadow or glow may show up in your public profile, they may not show up on your username in posts. Mine isn't showing up in posts but I do see such an effect on someone's title above in this thread. There was an issue in the past with the order in which things were applied to a username between vbPlaza and EvBoard's code; depending on when an effect is applied to the name another application of effects may accidentally remove them. It was (I believe at least partially) fixed after some investigation but I'm betting that it's back now.
*edit # the two*
OK, here's the problem. Warning, html and dhtml gobbledygook incoming!
According to
the DHTML information at w3schools there are some functions that do not work unless the background of a target is set to transparent (or, effectively, not defined). However, in the html code here, the board explicity sets for a user's name the background color. See in this code we have defined two sections, one for the vbPlaza stuff, then the second is from the board software itself (look for the two div style items):
Code:
<!-- vbPlaza start -->
<div id="postmenu_1090957" style="filter:glow(Color=Black,Strength=10); width: 100%;font-weight:bold;font-style:italic;padding:2px;">
<!-- vbPlaza end -->
<!-- <div style="padding:2px;background:#666666;"> -->
<a rel="nofollow" class="bigusername" href="http://www.evboard.com/member.php?u=20274"><font color="b1a454">Hoopyfrood</font></a>
<script type="text/javascript"> vbmenu_register("postmenu_1090957", true); </script>
</div>
</div>
See how in the vbPlaza section, we define the glow effect, but then in the board section we then explicitly set the background color to #666666 (the board's light grey). I tested by removing the background color, and suddenly my glow effect appeared.
A second test I performed was to grab the css sheet and apply that, and it turns out that the explicit declaration of background color for the username isn't necessary. The css sheet seems to apply the correct color behind it. It also doesn't seem to break other browsers like FF, so while they still won't show the glow effect the background color isn't affected either.
BTW, it looks like there is support for the DHTML effects like glow and such in Firefox but the page that has them appears to need to have specific code for doing so by calling an innerHTML function, or having some extra code on the page. My html-Fu isn't good enough to really know what they are getting at, other than it sounds like the browser doesn't do it automatically.