Try to realize an opportunity was offered before it stops being available.

Go For It more often.

yes

This is a great service to promote to your audience. If you don't have an audience, you should build one.

Reviewing code is one of those things where my main question is "Do I trust this guy's opinion?" The more I get to know you, the more I trust your opinion.

You might want to keep in mind that a lot/many/most countries have decided that Bitcoins are securities. As such there might be laws you have to comply with based on your jurisdiction.