I think those that write software on terminals limited to 80 characters need to either:
1) retire (you're obviously a fossil);)
2) stop being a cheapskate and upgrade your equipment
More seriously now, I think a maximum of 100 or 110 columns should be the "new standard or convention" for the column width of source code files (I deal primarily with C/C++, so a different maximum may be better suited for other languages).