One of the things you always want to provide visitors to your website is a good search tool. The default search tool that comes standard with WordPress is adequate. However, if your website covers a topic, or area of topics, or you have a Google AdSense account, you can take advantage of Google’s Custom Search Tool.
One of my frustrations when developing WordPress websites (separate from Thesis) is trying to have a “coming soon/under construction/under development” page so that the public gets the message that things are coming while I and the client can work away in the background. Why would you need this? Well in most cases you have a domain name purchased and parked somewhere. Many times you get a lovely, unsightly, generic ‘coming soon’ page that looks very unprofessional.