Sudden 50% drop in yahoo visits

[fraudcop]

I don't understand why, starting from the middle of february my yahoo search engine visits dropped 50%.

it happened to msn search engine too.

anyone have an idea what could have coused it?

thanks in advance

[cleanup]

Not sure if this is the reason, but I am seeing my site returned in searches only 50% of the time when I reference yahoo.com

It seems to depend on the time of day/server that I
hit.

The number of results are different in each of the two cases.

I noticed this around the end of January.

Although the local flavours of Yahoo! all return my site in one form or another I am also noticing more variation between local yahoos, again I started to notice this around the time your traffic fell.

Related? I don't know. But I do know that there are a number of incomplete indexes out there and it must be affecting a lot of other sites just like mine.