Maybe its just luck on my part (if such a thing exists in this field, I'm convinced it does!)but of late I'm finding Yahoo much quicker at indexing.I've been experimenting with a music news blog and found Yahoo were a crawling within 48 hours or so. After 6 weeks I was in the top 20 serps from one of my key phrases (out of over 4 million results). Not one single link exchange was done, no
PR (as in public relations blurb, not Page Rank by the way), nothing. I put it down to the RSS feeds as I literally just put the site up, posted daily and waited. Of course with it not being a commercial venture I can afford to do that.
On another note though Google sends way more referals than Yahoo, at least for me and it always has (and though Google quickly indexed the same site it wasn't even in the top 1000 for the same phrase).
Convenient way of keeping your eye on your own results is
http://www.yahoosearchrankings.com/index.php, from the same people that bought us Googlerankings.com, though I guess 99% of people here know this already !