* Cellular telephones.

* Multifunction boxes.

* Two-way pagers.

* Internet service providers.

* Personal digital assistants (PDAs).

full list via findarticles

1. Don’t miss important calls

2. Don’t limit yourself to desktop Internet access

3. Never get lost when handling business

4. Leave e-mail management to the experts 

5.  Don’t attempt to be a network administration pro

6. Connect directly with your wireless phone

7. Have a backup plan for your communications system

8. Stay connected to industry news from just about anywhere          

9. Save money by making unlimited calls to your office landline number

10. Secure your mobile phone

via allbusiness

#1: Insufficient technical support

#2: Hardware/software issues

#3: Insufficient power protection

#4: Illegal software

#5: Insufficient training

#6: Security failures

#7: Poor backup strategies

#8: Virus exposure

#9: Spyware exposure

#10: Unsolicited E-mail

via techrepublic