Just use the hashtag #ask4stuff followed by a few words as your search query and you will receive a tweet back with a URL to the results on WorldCat.org.
Here's an example tweet:
#Ask4Stuff postcolonial literature
To tweet a search query, you just need to post a tweet using #ask4stuff followed by the words you would otherwise enter into the search box: #ask4stuff "search query".
Even if you're not a Twitter user, you can view the tweets and replies by searching Twitter using the #ask4stuff hashtag.
Don't forget, you can keep up on the Libraries' happenings by following us: http://www.twitter.com/WUSTLlibraries