helpful links

Have a Boost Mobile iDEN phone (or NEXTEL), and want to install a software that you downloaded from the internet on your computer to the phone? You can with this link...
http://144.230.114.35/adp1/FUN/index.jsp?output=100

Want to search for a phone number from an address? Perhaps you want to search for a name or address from a phone number?
http://www.whitepages.com/10866/reverse-lookup

Need to know how to dial an international number from anywhere in the world, to anywhere else? Or look up what country a person is calling you from?
http://www.howtocallabroad.com/

Want a FREE DID?
http://www.ipcomms.net/product-freedid.html
http://www.ipkall.com/

What about some FREE VoIP?
http://www.voipbuster.com/en/index.html

Just want to make a free call from your PC to someone in the US or CAN?
http://callingamerica.com/ [no longer provides FREE calls]
Want to know what phone company currently controls a phone number, and what carrier originally owned that number?
http://tnid.org/

Want to know what central office serves a certain exchange? Perhaps you want other detailed information about a certain rate center, or other telephone switching equiptment? There is lots of interesting information to be found at this site.
http://www.telcodata.us/telcodata/telco?npa=&exchange=

Don't want to be bothered with telemarketers?
https://donotcall.gov/

Want to file a complaint about someone who violated the do not call list, or some other issue with a tele-commerce issue?
https://www.ftccomplaintassistant.gov/

Want more info on how telephone numbers are assigned, or some other similar questions?
http://nanpa.com/

Want information about laws governing the telephone? You can check the FCC website linked below, but you should also search for the Public Service Commission (PSC) or Public Utilities Commission (PUC) for your state.
http://fcc.gov/

EDIT- 2-27-10
Got a Magic Jack and need some more help than there "customer service" provides?
http://www.magicjacksupport.com/

EDIT - 6-13-10
Free conference service http://www.freemagicconference.com/

EDIT - 6-24-10
Want to know how to get a real person on the phone, instead of having to press 1 for this 2 for that?
http://gethuman.com/

Looking for a vanity toll free number? Look up if what you want is available by using this tool, don't worry, you can order your toll free number from whatever carrier that you choose if it is available.
http://businessesales.att.com/products/lookup_toll_free_results.jhtml;jsessionid=RCRZG20MXP40JB32A5NSKT2HXQD3GJLW?grp=additional&_requestid=197365