I don’t remember what Microsoft’s search engine share was, when I left the UK in the summer of 2000, but I’m pretty sure it was a lot better than the current anemic 3%.

According to the Guardian, Microsoft would love for Bing to recapture those glory days and is willing to spend the rest of its natural life next 3 months trying to claw it back.

The three-month campaign, which includes three TV ads created by the agency JWT, starts on Wednesday and uses the strapline "Bing and decide". The ads aim to show that Bing simplifies the "information overload" that accompanies the results of many searches.

The TV campaign will run solidly for a month and then in two-week bursts until mid-June. It will be backed by a digital campaign across Microsoft’s network and on media including social networking websites.

Three whole months, huh? Way to lay it all on the line Microsoft. You lose market share over a 10-15 year period and expect to win it all back by reaching consumers while they’re watching Coronation Street?

Of course, I know that Bing’s ad campaign won’t run for just 3 months–just this particular push–but consider this: Google achieved 90% share in the UK via word-of-mouth. Bing has been available to UK users–albeit in beta–since June. If they felt that Bing was truly revolutionizing search, they would have pushed the needle already. Right?