>My web site "Using Win32 Functions in Visual FoxPro" offers paid content available through subscription.
>
>Yesterday I had a subscriber, who paid with credit card on name of Carol Kim from Cali, Indiana, USA. Email carolkim@s.vnn.vn -- is it Vietnam?
>
>Today this subscriber has been connecting, most of them practically simultaneously, from at least 14 IP addresses located in so distant areas as Urugway, Taiwan, Korea, St.Louis and Iran:
>130.158.65.240
>192.150.249.88
>200.40.181.14
>210.104.221.97
>200.164.78.26
>200.207.163.224
>200.40.181.14
>200.54.164.75
>200.74.132.190
>210.104.221.97
>211.23.17.18
>211.248.96.195
>213.233.160.4
>213.89.107.111
>24.247.180.72
>61.238.157.142
>63.164.60.12
>81.56.96.121
>
>So what can it be?
>(1) Someone who's able to forge IP addresses?
>(2) Someone who has "enslaved" set of computers around the world
>(3) A group of FoxPro developers a.k.a. hackers
>(4) Real Carol Kim :)
>
>Doesn't it look strange? Any ideas? Except informing the online payment service which I'm going to do asap.

Most likely they're using a series of proxy-servers to do this. You can actually write a little program that will create a bunch of threads, each using a different proxy server. All you need is a list of proxy servers - which you can find easy enough. Often times this is done to avoid limitations of only being able to connect once to a specific server from an ip address, avoiding the problem of a 'banned' ip address, or to hide your identity and/or location. Sometimes you'll see this done to register as a new user on something a zillion times an hour - or maybe simulate clicks on a banner-ad that pays a few cents per click.
There are even programs that users can purchace to do something simlar to this - for example http://www.pcmesh.com/ - which might be what is happening.
Anyway the point is that the odds are probably 99% that if someone is doing this ip-bouncing type of stuff that 1)They know what they're doing and 2)they're probably up to no-good of somekind.
There is no such place as "Cali, Indiana" and that email address is an email service. Basicly there are too many reasons to be suspicious of this person - if it was up to me, I'd turn off their account.