Applied online from LinkedIn and received an email response with an hour asking to set up an interview. I did and I thought it went really well, but then I never hear anything again. I sent a thank you note after the interview and then a follow up about ten days later and never heard anything, not even a "thanks but no thanks" note. I thought it was rude and unprofessional, especially after the interviewer went on to tell me about potential next steps in the process.