Most would consider this common sense, but as the saying goes, "Common sense is uncommon."
This is for use with convincing a person that they're buying/trading a very geared character (for pvp, at least)
Step 1) Go to hXXp://wowarmory.com (replace the XX with tt)
2) Use the drop down menu labeled "Browse the Armory."
3) Click into the 5v5 arena bracket. I say 5v5 because that simply gives you 4 additional chances to come upon a well geared character.
4) Here's the 'tricky' part: Search any battlegroup you'd like, and go to the 3rd, 4th, 5th page or further to find a 5v5 team above 2000 rating.
5) Once you've got the team, chances are that all 5 (or more) members on the team will be AT LEAST full season 3, and most will be 3/5 Season 4 and 2/5 Season 3. If for some reason one of the team members isn't that geared, simply scroll down to the 5v5 team and select another one of the players.
6) Copy the link to this character and viola! you've got a fully epic'd 375 tailor/enchanter/jewelcrafter/etc. armory link to convince someone the account you're trading/selling has a very geared character on it.
The reason to go the the 3rd or above page is quite obvious... someone may recognize anyone in the first two pages as a 'world class' pvper, someone who wouldn't ever sell their account, and then your scam is sunk.
If you're lucky in your selection, you may stumble across someone in their PvE gear.
Like I said, this is pretty common sense, but a simple guide in helping you scam someone of their account.
~Clever