first thing people see on your blog is your blogs name or domain name, by looking at healthydietfordiabetics.com what can you understand is simply you know it is a blog for diabetics which can help them with diet but this name is not very userfriendly or easy to remember instead of that we have used the name cheenikum.com it would have been unique and it can also describe your business and easy to remember. 

Google and yahoo are not the words which were in the dictionary but they have made it to the dictionary now , this is called branding, Similarly Apple Computers name is also very interesting, apple is well know word and adding computers to it is a good formula, you also know about blackberry and kingfisher. if you are planning to build a big brand then you should look at brand value of your domain name.

For example few years ago, I thought of start up in which we can teach people how to do rooftop farming , for the rooftopfarming.com does not get good brand recognition so I have named it skiroots.com don't search for it because we discontinued the same.

unique words or words which are not in the dictionary can make for good brand.

Let me assume your blog wants to cover events which happen only in delhi or your blog is about restaurants in delhi . in this cases you can use the location name. 

for the events site delhidrama.com, delhievents.com, delhiconcerts.com can be good domain names 

 delhifoodie.com, delhijalebi.com , delhiforks.com delhikhana.com etc can be good domain names

people remember things which are unique and relevant to their lives. to make it easy to remember please keep in mind the following

• domain name length should be anywhere between 4 -14 characters bigger the name more are the chances of forgetting
• should be easy to spell, for example https://bonhappetee.com/ is really dififcult to spell where as healthifyme.com is easy to spell.
• easy to recall or remember, shoutmeloud.com is a bit weird but it is easy to remember, do you agree with me. problogger.net and digitaldeepak are easy to remember by logic.

Once upon time only way to drive traffic was through google and word of mouth but now social media has a very big role to play.  if your social media profile s and domain name are same it will be very easy for readers to relate and engage with your brand.

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• Your Facebook page url is same as that of your domain it will be easy for anyone to discover. 
• your twitter handle, instagram handle and pinterest handle all of them are important so please also check if your domain name is available on these social media sites also .
• This step is very important if you want to drive traffic to your website primarily through your social media sites

Amazon.com started in USA and then slowly started business in other countries, So if you are a startup who is selling ayurvedic herbs for diabetes in India and soon you may want to expand your business to USA or UK , then you may consider purchasing .in , .com , .us extensions and keep your domain name more generic like amazon 

If you plan to expand rapidly create a unique name which will be relevant with all the audience, naukri.com cannot look relevant to USA. 

• do not use numbers in domain names, they look like spam or fishy.
• Do not use hyphens in domain names because it will difficult for the readers to remember the spelling.
• Do not use double letters, like I did for my first ever blog www.readitt.in launched in 2011 this also makes it difficult to remember the domain name.
• try to use only a .com extension, you may use .in if you are selling products or a ecommerce website. because .com is easy to remember.
• please use https if you intend to sell any products or services on your blog.