Hello, upon searching, couldn't find anything, if it's reposted, I apologise. Very quick tip that shouldn't waste too much of your time.
When scamming in-game, be it for the famous spectral tiger codes or expensive materials (Say, Sunfire wraps - 6 sunmotes {10,000+g}) being belieavable can always cause problems. As you know if you play WoW, there will most likely be popular guilds on your server that are trusted, successful guilds (Usually guilds that Raid MH and upwards, preferably Sunwell for extra cred).
What you need to do is find one of these guilds that have a small "L" in the name. Let's take Nihilum for example. Accents just don't cut it sometimes, and since you can't copy a guild name that already exists, this could be your solution.
The lower case of the letter "L", displayed as "l", can be mimicked by a capital "i", displayed as "I". To most custom fonts in game, and the default font, the difference is barely distinguishable if at all apparent.
So in summary, you mimic a guild's name to gain credibility for your scam, by substituting "l" for "I". Example: NihiIum. (Doesn't look impressive here, but try it in-game).
Ciao.