If you absolutely cannot find a dot-com domain, then you could opt for a different extension, but be careful not to make that extension country specific. For example, don't use .US or .CA or even top-level domains such as .info or .cc or .name because you simply won't get the same global awareness and appeal that you would with a dot-com domain name.
Ninja Popups – The best $20 I’ve spent on my website in 2015. This one lets you create a popup windows that show up in front of your content and can help you readers to sign up for your newsletter, share your website on Facebook and many other things. It helps me to add about 30% more new email subscribers a day to my Positivity Newsletter. To not annoy people, be sure that his window is only shown once for each of your readers.
Perhaps the most popular network for placing these types of ads is Google AdSense. With this program, you do not need to be in direct contact with advertisers; you simply place the banner on your site, Google chooses ads relevant to your content, and your viewers click on the ads. There are countless similar programs available if you find that AdSense doesn’t work for you, such as Chitika, Infolinks, and Media.net.