Undaunted, I started poking around to find a program that would allow me to create similar effects on a PC and I came across Pixlr. I've been using the efficient version which has hundreds of effects, borders and overlays along with all the usual editing tools for cropping, rotating, blurring, fixing red eyes, etc. By far the best feature of using the filters and effects is that I'm able to salvage photos that were otherwise too blurry, grainy, dark or overexposed. Add a vintage effect and a nifty border and voila!
Here are some of the best examples of edited photos that otherwise would not have been blogworthy. (I can't imagine why spellchecker doesn't like the word blogworthy - it's a regular part of my vocabulary!)