While I will never be smart enough to have my own trophy card there are a lot of resources out there that do provide them. They vary in usefulness and aesthetics. Some are very useful, others are not.
YourGamerCards.net – My personal favorite at the moment because they update very quickly without you having to refresh your data at all. They have backgrounds for each game you are playing and their profiles are easy to sort through.
PS3Trophies.com – This site has a ton of options, they track all games (even those missing from the US PlayStation site) and they are very customizable. The problem? You have to pay to get good updates (my card updates once a week, sometimes more… I don’t pay). Granted, the cost is only $10, but there isn’t another trophy card out there that makes you pay to use it properly.
EU Playstation Site - You don’t have to live over the pond to get one of these cards, just sign in with your US info and you will get in. The cards look nice and have some customization options but the lack of a public profile makes this less than ideal.
US Playstation Site – No where near as well put together as it’s EU counterpart, this is one of the worst trophy cards. It doesn’t update on it’s own and it doesn’t even show recent games player or trophies earned.
Playfire.com – Great site that is the Facebook equivlent for gamers. They have both manual and automatic trophy cards which link to your profile. The data is tied to the EU PSN site so if you want it to update you have to refresh your details on Sony’s site first. That makes this less user friendly that I would like. Their profiles also aren’t that great.
LusoGamer.com – New to the scene towards the end of 2010 the cards look nice but there are no public profiles. That makes their card kind of useless.
MyPS3T.br – Very nice cards, nice profiles… it’s just in Portuguese. If I could speak the language I’d probably like them more, but they aren’t a bad resource if you use Google Translate.
