To be sure not to waste time during a ksp to meet people with whom I have already exchanged fingerprints, I decided to do a quick check of the list.

I had already downloaded a recent wotsap db to ~/.wotsapdb;

$ wotsap $MY_KEY > signatures.txt

I've then edited the file, keeping just the signature sections:

This key is signed by, excluding cross-signatures:
[...]
This key is cross-signed with:
[...]
Keys signed by this key, excluding cross-signatures:
[...]

And then grepped the keys in the kps file in that list (maybe doing the reverse would have been better, whatever)

$ for K in `grep "^pub" ksp-dc15.txt | cut -c 15-22 ` ; do grep $K signatures.txt ; done

The first characters on each line tells you if it is a cross signature (X,X), if you have signed the key (-,X) or if they have signed your key (X,-), so that you can mark them on the ksp list as "ignore", "ask if there were problems with your fingerprint / ID", "ask whether they have received your signatures" as relevant.

I only had a few results, so the next step was done by hand.