Firstly - learn your bbcodes, it's [s] and [/s] to strikethrough stuff. XD
Secondly - I'll forward the suggestion. As you may have guessed, we run a very simple Bbcode and we are in need of some updates, one of which is Strikethrough, but there hasn't been a call for it in the 8 years of this forum. If it's genuinely wanted, I can put it through to the admin on our monthly reports.