What exactly is a long tail keyword? If you sell say paint a general keyword would be paint or blue paint. Now would you guys say 'cheap blue paint on sale' is a long tail keyword or is this still pretty general are we saying 'cheap blue paint on sale in london' is a long tail keyword because if so this term will only get a few searches a month meaning if your aiming for long tail keywords on a new website to start it off then your going to need 100's of them.
"Garage floor paint" would be a long tail keyword. With 8100 searches a month, that's not too bad either.
You have trophy keywords and search terms that are generally the most obvious that people want to rank well for but often can result in high volume low quality traffic, usually because the word or phrase is too generic. Then there are all the niche keywords and search terms, that often attract lower volumes but often higher quality traffic. Together, these niche keywords and search terms form what is known as the longtail. Often the volume of traffic generated by the sum of the longtail keywords can be higher than the individual trophy keywords and search terms. To fully appreciate the longtail you have to be optimizing for hundreds of search terms.
Long tail SEO is to do the SEO for long tail keywords. This kind of keywords have less competitions so that you can easily get on top in search engines.
When you starting new website is better to select the words in a low or medium competition area. These words are usually  long-tail. Those long-tail kewords really effective in promoting in high-competitive niche, when promoting for rich&short keywords is really difficult.
well anything that's niche under niche or micro-niche can be defined as LONG-Tail Keyword ..don't know ig long-head Kw exists.
Long tail keyword have the more than two words. Such as Traslochi Internazionali Milano is the long tail keywors and Traslochi is the short tail keyword.
I don't think that a long tail keyword has a limit in words. If you can get enough searchers for that phrase you win. But generally speaking long tail keyword is something that has 3 or more words in the phrase.
A long-tail keyword is considered between 2-5 keyword phrases depending on the level of competition within your target niche.
Long tail keywords are a type of phrase that has at least three, and sometimes even five words in the phrase.Keywords are the basis on which the whole structure is based on users search on keywords SEO and search engines to comply with its search algorithms based on these keywords.
If your site new so long tail is very useful for you and you can get fast ranking and popularity in google so long tail keyword perfect for new site.
I recommend The Long Tail: Why the Future of Business is Selling Less of More book by Chris Anderson.
Long tail keywords are keyword phrases composed of three or more words that collectively are more specific than a single keyword.