Apparently, the third amendment’s the charm. Having filed a third amendment to its S-1 filing with the SEC just last week, Prosper has added a maintenance message to the header of its site, stating that the site will be offline all weekend for “system upgrades and configuration changes”.

Prosper Maintenance Message, 23 April 2009This is probably an indication that Prosper is preparing their site to relaunch with the loan securitization model pioneered by Lending Club in 2008. Other expected changes include the introduction of “open market” loans (pre-funded by other originators) and  a secondary market offered through Folio Investing.

Aside from Lending Club and Pertuity Direct, who operates a mutual fund-like P2P lending model, a relaunch would make Prosper the 3rd active peer lending business in the US. Neither Loanio, who shut down shortly after Prosper last fall, nor IOU Central, who opened in Canada but then announced plans to open in the US, has even filed a registration statement with the SEC.

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