Last year Ask launched Ask3d, and with it came the ability to customize your Ask.com interface with a collection of skins. I personally have never customized a search engine interface using skins, but can certainly see the appeal it may bring to some web users.
Since it began allowing skins, Ask has received many requests for the ability to upload custom skins, and now they have included this feature.
Ask’s Official Blog has step by step instructions on how to customize your search using skins. I suspect that while this feature will appeal to many existing Ask users, it is probably unlikely to pull users from other engines to increase their market share. Nevertheless, it is nice to see a search engine that actually listens to its users.