What to double-check before any transaction

I know about Bitcoin and was part of the community since 2010. Along the way, I received an outrageous number of forged emails, private messages, even on my personal email address, which is not linked in any way to Bitcoin.

It looks like the guys from HeroCOIN are also aware about this general issue, and here's a message from them:

Always keep in mind the followings:

• Scammers can use HTTPS too, never send money to a website before checking it on Google
• Never share your private keys with anyone
• Always use common sense. 
• When in doubt: research. Google is a very powerful tool, use it!
• Don't download fishy software, don't follow links from spam emails

You should always double-check the followings before any new transaction:

• Double-check for potential security issues (SSL certificate, domain name, etc)
• Double-check the destination address
• Double-check the amount
• Double-check the fee

Found a scam website? Send your finding to Google Safe Browsing and help them keep the web safe!
Report it using the Google's official reporting page: https://safebrowsing.google.com/safebrowsing/report_phish/