Adding the degree symbol to your posts and other keyboard symbols.

[abaddonxi]

http://www.aulro.com/afvb/90-110-130-defender-county/67506-defender-130-300tdi.html#post855083

Alt 157 Ø
Alt 159 ƒ
Alt 184 ©
Alt 225 ß
Alt 230 µ
Alt 241 ±
Alt 248 ° (degree)
Alt 234 Ω (may not work on all computers)

http://everything2.com/index.pl?node=Special%20Alt%20key%20characters%20% 26%20accents

[Phoenix]

of you can use the character map in windows (if you are on windows ;) )

[abaddonxi]

Strikethrough!

[ s ] [ / s ] without the spaces.