Very low priority but I have often found it would be useful to allow wildcards in the User search of the Advanced Search. It seems to be the only search routine on eBid that does not allow them.
I can often recall the main part of a user's name (e.g. jacko) but if they have numbers as part of it (e.g. jacko743) then I can struggle and finding them is a chore.
Returning a list of results from a search term such as jacko* from which to choose would be a great help; even better would be an option to carry out a Soundex search on users to return a list of matches.