Eftersom standarden er at værdier i ROBOTS tagget adskilles med komma, er det MERE sandsynligt at en søgemaskine fucker i det hvis man har to robots tags end hvis man har alle værdierne på en linje:
And if you wanted to block both the Open Directory and Yahoo Directory titles being used, you’ll need to do both of there:
<META NAME="ROBOTS" CONTENT="NOYDIR">
<META NAME="ROBOTS" CONTENT="NOODP">
Maybe. Then again, having two meta robots tags possibly might make a search engine choose one or the other, not both. You could be safe by using a tag for each specific spider:
<META NAME="GOOGLEBOT" CONTENT="NOODP">
<META NAME="SLURP" CONTENT="NOODP">
<META NAME="MSNBOT" CONTENT="NOODP">
But that’s a lot of unnecessary work, likely. Instead, I suspect that you really need to do something like this:
<META NAME="ROBOTS" CONTENT="NOYDIR,NOODP">