Why not?

My wordpress blog suddenly jumped to life this morning.  After getting 15-17 views in the last few days, and never having gotten more than 37, this morning I got 47 visits.  And I can't quite figure out where they are coming from.  Almost all the incoming traffic registered is coming from Yahoo logins, although several came from my original blog (although my sitemeter there records no traffic).  So did someone email links to my blog to people?  Quite mysterious.