Suggestions

[Barubary]

Small suggestions that could be useful:
- a spoiler tag;

Code:

[SPOILER]spoiler here[/SPOILER]

And not the one that PT uses (highlight to read), but more like the one Sprites INC uses (one box you have to click to expand to see the spoiler).

- a sheet tag;

Code:

[SHEET="http://www.site.com/dir/sheet.png"]title[/SHEET]

would result in

Code:

[url="http://www.site.com/dir/sheet.png"][img]http://www.site.com/dir/sheet_icon.png[/img][/url]

and

Code:

[SHEET="http://www.site.com/dir/sheet.png" TEXT]title[/SHEET]

would result in something like:

Code:

[url="http://www.site.com/dir/sheet.png"]title[/url] - [url="http://www.site.com/dir/sheet_icon.png"]icon[/url]

(obviously, the .png-extension could be anything)
This could promote people to name their sheets and icons correctly.
(and makes it easier for people who keep all their submissions in one post, like me)

EDIT: fixed -icon to be _icon