So what is with these services?
More than 50% of the time I get this response for searches at Technorati:
Sorry, we couldn't complete your search because we're experiencing a high volume of requests right now. Please try again in a minute or add this search to your watchlist to track conversation.
And Ping-o-Matic seems totally baked (and has been for the last couple of days) -- ping submissions seem to go off to the ozone and stats are "disabled".