I was offered by GoDaddy to purchase the .net and .org extensions of my domain name when renewing today. Is it worth it? Should I try to prevent someone from having the same website name as mine with a different extension? For example lets say I have coolhouses.com and coolhouses.net and .org are available. Would it be wise to grab them? Thanks.
nope, people will go to .com over .net/.org anyway. Renew your .com and ignore the .net/.org Though if you own a big business, it's wise grabbing the .net/.org altogether since it's only a small matter of money.
If your buisness is but ( say worth in 4 digits ) then you must secure the top 4 TLDs. ( .Net, .Org, .Info ) and redirect the others to .com If it is not such a big buisness website do not care a lot about it. it will not be worth your investment ( if you are not going to develop them separately.)
It's not always necessary to go with all domain extensions rather build your brand and market it aggressively..... don't worry even if other extensions are hold by other business rivals