I have purchased a .com domain of a large shopping centre, of which i was running a non-profit site displaying tweets contain the same name or phrase to do with the shopping centre. They first approached me to take down the site and hand over the domain name. As they said my branding was too similar and some may think that it is a site made by them. However i have shown this too a couple people and they seem to think it is not the case. Was a fun site to get people tweeting about the city. In reply i said i would take down the site while i investigate this situation, as it was not my intention to cause any harm to the brand. They then replied with thanks and then asking me to hand over the domain and my expenses will be returned upon showing a receipt / invoice of purchase. I then replied and said if i am in the wrong then we can work something out, but for now i will be holding onto the domain. They thanked me for the response and they would be grateful if i could revert with them in the next 7 days. HELP! What do i do? Do i hand over the domain? or Do i sell the domain? If so how do i find out how much a domain is worth? Anyone else been in a similar situation?