There is often debate or confusion about the sort of Domain name extension that you should choose for a website or blog. There used to be just a handful of extensions to select from but these days there are many. In reality through for commercial purposes there are only really three that you should consider.
Assuming your site is of appeal to a worldwide audience then the first extension to try and get is a .com if that isn’t available look to get the .net failing that you could go for .org not really an extension I would go for.
I should warn you that there are constant rumblings about the use of .org extensions being allowed for use as a commercial site. The reason for this is that it was originally intended for use in non-profit ventures. At the moment though no restrictions are being applied so it is a possible last resort.
The last type of extension to look at is the country specific. For instance if you live in the UK and your site is only of interest to UK residents then use .co.uk.
I made a mistake on one of my golf sites the UK site is .com and much of the traffic comes form the USA! They do buy but my intention was for more UK traffic.
Going back to the order of choice if you really do need .com then maybe there is still a way
of getting it!
Lets say your niche phrase that you need a domain for is bigfatpotato and the .com is gone
and so is .net.
You could try this big-fatpotato or bigfat-potato as .com or .net failing that add a meaningful word to the end, such as online or blog or site.
You may well be lucky and find bigfatpotaoblog.com is available.
Keep the characters in the site name to less than 25 and the hyphens to a minimum. Try to avoid hyphens between all keywords as that can be seen as a bit spammy by Google!
Always try and get the domain with no hyphens first and then follow the process above if your first choice isn’t available. Ensure your main keywords are on the left.