LONDON, Jan 17 (Reuter) - Governments which seek to restrain the freedom of speech and tax the vast electronic commerce spawned by the Internet will almost certainly be wasting their time, experts say. The world-wide network of personal computers linked across telephone lines allows ordinary citizens to communicate freely across international borders, often for the first time. They will be able to tap into ideas from all corners of the globe and also find the cheapest price in the world for goods, which they will sometimes be able to buy without tax. This magical prospect for people is often heresy for governments. Even if governments are not inclined to curb freedom of speech, they are all alive to the dangers of loss of tax revenues. But there will probably be nothing they can do about it. Experts say that any attempt to control traffic over the Internet will be futile. Governments in China, Burma and Singapore have already tried to discipline this on-line activity with minimal success. INTERNET GROWTH SET TO ACCELERATE The growth in personal computer use and the Internet has been stupendous. The U.S. high-technology research company IDG says that by the year 2000, more than one billion people across the world will be users of personal computers, up from 450 million in 1996. In a recent report, the British research firm Datamonitor said 38 million European households will be able to connect their personal computers with modems to the Internet by 2001. That would represent 25 percent of European households, up from less than two percent now. This will generate unprecedented levels of ``surfing'' for information, and a gradual buildup of electronic commerce, where people arrange their banking, buy holidays, select movies and shop. All this assumes that personal computer makers can make the final leap to producing machines which are easy for non-experts and that telephone utilities can keep pace with the demand on their lines. COMPUTER EXPERTS ALWAYS ONE STEP AHEAD OF GOVERNMENTS Dr Bob Glass of the U.S. technology leader Sun Microsystems Inc said any attempt by governments to curtail any of this would be a waste of time. Not even the most powerful computers will be able to effectively patrol the world's telephone lines. Individual computer experts will always be one step ahead. ``Singapore has tried curbs. When you dial in you can only get the headlines on web sites. But people just call outside the country to another Internet server,'' Glass said. ``The same in China. All Internet traffic is routed through Beijing University which only allows the content the government allows. But they can go via a telephone call to, say, Taiwan to find the information they want,'' Glass said. This week Chinese officials said Beijing had loosened its controls on Internet users accessing foreign news sources but would continue to watch for politically suspect content on the network. Other countries have more direct methods of imposing their will. In November Burma announced a law penalising the unauthorised use of modems or fax machines with up to 15 years in jail.