Shorter Amazon.com Links

Usage:

http://www.amazonitem.com/<itemnumber>

Example:

A long link to an Amazon.com item like this:
http://www.amazon.com/gp/product/B000JLD72I/ref=amb_link_5620692_1/105-1867380-3986058?ie=UTF8&me=ATVPDKIKX0DER&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-1&pf_rd_r=15WXGMGZXZ97G4XDWFFG&pf_rd_t=101&pf_rd_p=315145701&pf_rd_i=507846
can be rewritten into a short link like this:
http://amazonitem.com/B000JLD72I
To include your affiliate code, add it like this:
http://amazonitem.com/B000JLD72I/thisamericanlife

How it works:

URL is rewritten with Apache mod_rewrite.