What Use Is An F-call?

What use is an F-call? One of the many projects I'm dealing with as a result of attempting to achieve contacting 100 different countries using only 5 Watts, also known as a QRP DXCC, is to log my contacts and upload them to a place where others might confirm those contacts. Traditionally, the process of confirming a QSO involves sending a QSL card between stations. Think of it as a post-card that has details about the contact you made. The other station in turn sends their card to you, that way, both of you have a confirmed contact. With the advent of the Internet this has begun to change. There are several websites that provide a QSL service. Each with differing options, costs and facilities. In theory the process is simple. Create a log of all your contacts, upload it to the website of choice and wait for other stations to do the same, thus confirming your contact. Of course in practice there is a bit more to it than those simple words convey. Starting at the log file end, there are many different way