Is VoIP the Way to Go?

Howpostsgetratedsuck asks: "My cable operator now offers VoIP local and long distance for one flat rate. Does anyone have any experience with or use a VoIP service provider? What are the pros and cons? What do you give up? Do they provide more than one number for my dedicated fax line? Is it better to just use wireless services for everything and dump the landline pots service altogether? Should I stay "status quo" for a while longer? I use the telephone in my business office for about 90% of my telco anyway."