Do they bring any additional functionality that were not available in message boards 30 years ago, besides the ability to publish multimedia and better web interface? Are there any new functionality that are important?
What about the likes and friend
How would you design a system that send alerts (text messages, email, etc.) to subscribers - or even to everybody depending on the kind of alert - regarding:
I received a PDF document by email (tax form to sign and email back), but could not print it as my printer was broken. Here's what I did:
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