keyserver.searchy.nl - Extract a key
You can extract a key by typing in some words that appear in the userid of the key you're looking for, or by typing in the keyid in hex format ("0x...")
keyserver.searchy.nl - Insert a key
You can submit a key by simply pasting in the ASCII-armored version of your key and clicking on submit.
SKS is a new OpenPGP keyserver. The main innovation of SKS is that it includes a highly-efficient reconciliation algorithm for keeping the keyservers synchronized. You can learn more about SKS at the Savannah page, here.