Thank You note can go a long way

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Thanking the interviewer after your tedious interview is a good practice for a job hunter, because it gives you the chance to remind the interviewer about the skills that you can benefit to their company, as well as it is being a courteous and polite trait as a person in general. So after the interview, do not forget to request for the interviewer’s business card.
Tips in writing Thank you:
Hand write neatly or better yet, type the thank you note.
Address the note to the interviewer.
Make the note short.
Thank the employer for the interview. Mention that you are interested in the position.
Include any important information that was not mentioned during the interview.
Provide your contact information and email address.
Sign the note with your complete name. So the interviewer knows from who it came from.
Double check and proof read for spelling or grammar errors.