Unfortunately we can't implement every request Bathsheba , but this particular function is one that Mumsnet has as well, so was easier to carry across.
Sorry to say that there are no plans to create a like button, but in terms of the username changes, we canvassed opinions from gransnetters - some were for and some were against. If you're concerned about anonymity, just drop us an email and we'll be happy to change your username for you. Similarly, if there's a particularly sensitive thread you'd like to post on anonymously, just get in touch with us and we can change your username as a one off, and then change it back for you once you've finished commenting on that particular thread.