If you see something that someone else might like, pm them with the auction link. Ive had fellow collectors do that for me over the years and Ive done the same. Thats the only way anyone would benefit from it. The way your asking for it to be done will create too much comp for a piece that may not have been listed right, wrong catagory, wrong wording, etc. than a normal search for the item had to begin with.
Hope JoeY doesnt mind me posting the link to the RS thread, been 5 years ago this coming Sunday, but heres a prime example that I was talking about.
Polish Snowtrooper
This is one reason why theres a no outting rule, at least until the buyer has left feedback for the item.