All symptoms of leg pain caused by the conditions listed above are often referred to as sciatica. This is because the pain often radiates along the sciatic nerve, which originates with certain nerve roots in the low back and runs through the back of each leg into the foot.
Trackback - A method by which a blogger receives notification which other bloggers link to his or her blog entry
What Is Relaying? If you've ever received unwanted spam in your mailbox, then you already know what relaying is: using a server to accept and then resend mail to recipients on another server. In the simplest case, alice@a.com connects to the SMTP server at b.com and uses it to deliver a message to charlie@c.com.