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 (NASDAQ:EBAY) 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.

Fool contributor Tim Beyers is a member of the Motley Fool Rule Breakers stock-picking team and the Motley Fool Supernova Odyssey I mission. He owned shares of Google at the time of publication. Check out Tim's Web home and portfolio holdings, or connect with him on Google+Tumblr, or Twitter, where he goes by @milehighfool. You can also get his insights delivered directly to your RSS reader.

The Motley Fool recommends and owns shares of eBay, Google, and Starbucks. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.