Valuation issues of messaging company Tomonline were the key concern for investors today as bankers and investors involved in the spin off of Li Kashing's internet portal tom.com started the pre-marketing process. The company's IPO in Hong Kong and ADR issue on Nasdaq is set to raise HK$1 billion to HK$1.64 billion ($128 million to $210 million), with around 80% to 90% of the issued shares to be primary shares.