Ok..So I've heard and seen first hand the importance of having your main keyword in the domain. In some cases...especially long tail keywords... it can be as simple as getting the domain based on the keyword and you rank. I have a question...Many times you can't get the domain you want.. Would it still make a difference if I were to buy a domain and append a letter at the end? For example: Instead of bestcardeals.com ...would bestcardealsX.com work? Obviously not as well as the former..but would it help in any way rather then just going for a brand name?