How long to Update Yahoo's secondary sites?

[sysdomatic]

Anyone know generally how long it takes sites that use Yahoo's data (MSN, Alltheweb) to update their databases to reflect a change in Yahoo's SERP's? We had a fairly major increase in one of our sites in Yahoo two days ago, and are wondering when the change will be reflected in yahoo.ca, MSN, etc. Thanks,

Dave

[robotsdobetter]

They all do it at their own pace, so it's kinda hard to know.

[2_much]

Also, they don't grab all the data in the same way, and they often change the results.

[sitelynx]

Interesting you say this - we are working on a visibility audit for a client at the moment and this is a big problem we are researching.

From what we are seeing of the "journey" indexed content out to the other SEs, only half of the content in the "original" yahoo index ends up in the secondary search engines (MSN in this example) (560 Yahoo / 290 MSN)

So to answer your question - it maybe you will never see the same quantity indexed pages in the other SE's.

Anyone got any other stats on this, as it would really help with a bit of "crystal ball" analysis for clients.
Cheers