The Pearl website has several useful features:
Shop - allows you to buy the PDF and hard copy books written by Tan Kin Lian and Dr. Tommy Wong
Findword - find words from the given letters, good to the 4 PIC 1
Condo - shows details of condos in Singapore
Bus - shows bus routes and bus stops in Singapore
Financial Projection - carry out a long term projection, excluding effect of inflation
Essay - carry out grammar and spelling checks for your essay.
Hope you find them useful.