Property website Rightmove said it is confident of meeting its improved expectations after a strong start to 2010.The company said use of its website by new home buyers continues to set new records, the number of advertisers on the site has climbed by 1% since December, with advertisers accepting price rises and that average revenue per user has increased.Rightmove also claimed its market share among the top property websites has climbed to 83%, from 81% over 2009.While revenue per user has risen due to price rises and sales of additional advertising products, Rightmove said the number of new developments being advertised on the website continues to be low.