Just be Honest.

Playing games is one thing but bullshitting is pathetic. Have the guts to be honest what you are offering or prepared to do, just don't promise something you can't deliver without an explanation. Simple manners cost nothing and doesn't always cause offence, we all come on here to play and escape but why say one thing and do another and block someone without an explanation. It's easy to say back off, explain what the issue is and tell the person. If they are plain nasty, not a problem... Ignorance and stupidity deserves a block.

e.g Don't tell someone to look at your pictures when you haven't given them access and judge them to be an idiot when they tell you so. If you can't play the game, grow up!