Let's all just get along!
Anyone and everyone can be a repair tech. Give them the opportunity!
We're a community of people who want to get better at fixing things. Stay focused on that goal.
There are lots of websites out there for people to act foolishly on. This is not one of them.
Remember when you were working on that really hard thing that one time? Imagine the person you're helping out is you back then.
Repair is hard! Let's make it fun and rewarding.
You know the guy. Don't be that guy. (thanks, flickr)
Rip Off Someone Else's Work
Paraphrasing content from elsewhere on the web, while giving credit by linking to the source, is perfectly all right. But copying and pasting someone else's words into your document is considered plagiarism. You'll only learn the ins and outs of technical writing by doing the writing part yourself, so avoid the temptation to plagiarize. This has the added benefit of keeping you out of a university disciplinary hearing (which we're told are not nearly as fun as they sound).
We're all trying to make a living. You are welcome to use your profile page to promote your services, but do not promote your own commercial offerings in Answers. As you build your reputation in the community, people will come to trust you and will seek out your services.