By now you've heard of Bitcoin, the e-currency that's driving speculators mad with greed.

Expect plenty of broken hearts (and busted portfolios) when the rush is over. But that doesn't mean you can't invest in the underlying business need that gave rise to Bitcoin in the first place. E-payments are of growing importance in a world that's increasingly driven by e-commerce, says Tim Beyers of Motley Fool Rule Breakers and Motley Fool Supernova in the following video.

For example, in the last quarter alone, eBay (EBAY 0.31%) handled about $18 billion worth of transactions. The company also serves 128 million e-payment consumers via PayPal, making it one Tim's top choices as a Bitcoin alternative.

Watch the video to get his three other picks, and then leave a comment to let us know what you think of Tim's choices or to offer your own alternatives. Either way, we want to hear from you.