Which of the following are Virus propagation techniques?

In general, the 'amateur' / 'DIY' website is to be avoided - but for which of the following might a website developed by an amateur be sufficient for their online objectives?

Which might find it most advisable to have some or all of their website’s content translated into languages other than English?

Which options is the f‌irst stage of the marketing funnel?

Which is the fake SMTP server for testing and viewing emails that can also be used for analyzing emails by SPAM and blacklists?

Which option is the best way for reaching the end-users who have opted in but the digital marketer lacks the proof of their consent?

Why have social networking sites become a popular method of internet marketing?

What is an auto-responder?

Why is it important to fine tune the timing of the ad and keywords used?

Purpose of having a special landing page for a PPC ad?

What is a double opt in process?