it is my belief that domain names worth is what shows up more in search results example being thisexample.com vs thisexample.ws so if you were to search the words this example and thisexample.ws comes before the .com or the net whats the worth if the .com is worth 1000.00 and dont have results then what is the .ws .net .org etc worth
Extension is still important but of a reducing bonus value. The cheaper the product/service the less value for the extension. Why? The more affordable the item the more widespread the usage and therefore less restrictive to the .com TLD. Extensions such as .ws .tv .to have great value worldwide in specific areas of domain names. If you can get it to work with the extension it is extremely valuable such as domain.ws (as in website or worldsite) for generic and web words - free.tv for programs that appear on TV or words associated with the industry - and voucher.to for going places etc. They are short and discriptive.
Think of voucher to as having a brand name after it www.voucher.to/subway.html or as a sub domain such as food.voucher.to making it extremely valuable for it's double usage and easy description that sticks in the mind.
Some words will get 50,000,000 results but if you are one of the crowd then it is valueless. Having a popular domain just by name is part of the requirement - content will still drive most of the results in which case extension becomes of much less value.
However you must remember country specific extensions such as .uk .au .nz .cn .pk have regional significance and while near valueless within one region are extremely valuable locally.
Names that work with good industry/term extensions such as .tv .ws .to .in have great marketing value.
Examples such as
color.tv widescreen.tv lcd.tv
waterwise.ws health.ws
going.to coupon.to
going.in travelling.in
have huge marketing value worldwide and would have easily twice the value of their .com equivelants if not closer to 5 times