Wow. Close call. I was about to get the same lens from the same seller about a month ago but at the very last moment I thought I can wait for a few weeks to see some more reviews of the seller come in.
I was thinking about getting defective product shipped etc but never thought I could have faced such a sophisticated scam.
For me, keeping in view how other people look at the situation is the most important thing in effective communication. I've found PG's advice the best in this regard:
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If you want to learn what people want, read Dale Carnegie's How to Win Friends and Influence People. [8] When a friend recommended this book, I couldn't believe he was serious. But he insisted it was good, so I read it, and he was right. It deals with the most difficult problem in human experience: how to see things from other people's point of view, instead of thinking only of yourself.
[8] Buy an old copy from the 1940s or 50s instead of the current edition, which has been rewritten to suit present fashions. The original edition contained a few unPC ideas, but it's always better to read an original book, bearing in mind that it's a book from a past era, than to read a new version sanitized for your protection.
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Preview.app, the default image editor on Mac OS X, is just as convenient. I think it has fewer clicks; the selection tool is always the default, so you just drag and Cmd+K. Save-on-quit is the default as well so you just close the window.
Authenticated scanners that use key auth like Qualys' security appliances could have private keys that are valid across the organization, and if using an affected client version, could leak this information to a malicious system on your network.