If you're a big fan of the popular humor site someecards.com, then you'll love someecards for iPhone. With it, you can view and send new cards as they go live, get topical humor right to your iPhone (including cards that make fun of iPhones), enjoy the same categories that are offered on the website (from flirting to workplace to cry for help), save cards as favorites, and more.
someecards organizes its content by newest, popular, or category. You can also search for keywords and mark cards as favorites. The news tab is essentially someecards' twitter feed with links to posts on their website. Since the Twitter feed is basically just spitting out someecards' RSS feed, I think it would've been better of they pulled directly from RSS instead of using Twitter.
When you come across a card you want to share, you can send it to Facebook, Twitter, Email, SMS, or save it to your Camera Roll.
I tend to see a lot of e-cards from someecards on Facebook these days, so if you're one of those people to love to spam shower your friends with these images, then someecards for iPhone is definitely for you!