[Q] Servers Ultimate APP questions

Some of you may already know about this app which lets you turn your Android device into one of many different types of servers. I am very interested in this, but am not sure of which type of server I should be using.

Could someone knowledgeable give a brief description of what each type of server would be used for?

I am personally wanting to run this on my HTC EVO 4G at home so that I can access things at any time from any computer. I am not sure which server that would be though.

It runs:
DLNA
DNS
Dynamic DNS updater
Email Server
FTP server
IRC Server
Proxy Server
SMS Gateway
Socks Server
SSH Server
Telnet Server
Test Server
Time Server
Web Server
WebDAV Server

Thanks for the info.