What is a long-tail keyword, and what is an LSI keyword?

[najishahmed]

Hlo Friends,
Can anyone tell me, What is a long-tail keyword, and what is an LSI keyword?

[RH-Calvin]

Long tail keywords are usually keyword phrases that have relatively less number of searches. These keywords are often used to rank your website faster in search engines.

LSI keywords (Latent Semantic Indexing) are basically keywords that are semantically related to your primary keyword.

[Powerfulvasikar]

Long tail keywords are those three and four keyword phrases which are very, very specific to whatever you are selling.

[alliecandy]

Long tail keywords are those three and four keyword phrases which are very, very specific to whatever you are selling. You see, whenever a customer uses a highly specific search phrase, they tend to be looking for exactly what they are actually going to buy.
LSI keywords (Latent Semantic Indexing) are basically keywords that are semantically related to your primary keyword. Contrary to popular belief, they are NOT just synonym or keywords that are similar in meaning.