The campaign against the extradition of 24-year-old Richard O'Dwyer has gained more high profile support in the past few days, including Wikipedia founder Jimmy Wales and Labour MP Tom Watson.

The Sheffield Hallam multimedia student faces two charges in the US of criminal infringement of copyright and conspiracy to commit copyright infringement. The charges relate to his role in setting up TVshack.net, a website linking to sites where people could watch US TV and movies online.

His mother Julia, a community nurse working with terminally-ill children, has led a campaign against the extradition of her son and others to the US. A relative stranger to the internet and having never used Twitter or other social networks before Richard's case, she has collected more than 20,000 signatures on a petition for her son with the help of her Twitter account @JRODwyer, her blog and the hashtag #SaveRichard.

At 1pm BST on Tuesday, she came online to answer your comments and questions about her campaigning and her son's experience. Thanks to all those who contributed.