Uh... I don't really want to post this in advertisement, but I did want to bring it to peoples' attention as I'm sure there are a few people here who would be interested in it...
Anyways, for the last fortnight or so I've been working on a script that lets your create your own Trainer Card online, without the need to sit down and create one yourself or ask someone to make one for you. I've been wanting to do something like this for quite some time but I had a bit of free time a few weeks ago to experiment with image functions in PHP and finally got around to it.
I always figured that something like this would be ideal for a lot of people to have access to, since there are quite a few people that don't have the tools, knowhow, ability or time to make Trainer Cards but would still want them - especially NOW, with Diamond/Pearl/Battle Revolution and them being ideal ways to share your Friend Codes and show what team you use.
Obviously there are restrictions to it, right now there's only one Trainer Card Background to use (but there will be more templates available soon, I promise), and you can't use your own custom Trainer Sprites (see down a little bit for more info on that) but for the ease of use and speed of use (takes mere minutes to make a card), as well as the free hosting, I think it's a fair enough deal - and obviously most people bothered by that will probably use their own designs more (though with this being so quick to do, I'd say there's even a use for this for those people).
As for not being able to use your own custom Trainer sprites, there is a way around that, as I've started up a project on the Pokecharms Forums for people to submit Trainer sprites to use in the program (info available here) which should not only satisfy those wanting to use their own custom sprites (if they're GOOD anyway) as well as building up the list of Trainers available for everyone to choose from.
The tool is available here: http://www.pokecharms.com/trainercards/ and there's more info on there too about the system.
Soo..... yeah... I really hope this wasn't too spammy/advertisey but I also hope people have fun trying this out and hopefully will use it to make Trainer Cards for their sigs with. :)