So, I've got you bog standard c# object, overriding Equalsand implementing IEquatable

    public override int GetHashCode()
    {
        return _name.GetHashCode();
    }

    public override bool Equals(object obj)
    {
        return Equals(obj as Tag)
    }

    #region IEquatable<Tag> Members

    public bool Equals(Tag other)
    {
        if (other == null)
            return false;
        else
            return _name == other._name;
    }

    #endregion

Now, for some reason, I used to think that forwarding the calls from Equals into Equals was bad, no idea why, perhaps I read it a long time ago, anyway I'd write separate (but logically same) code for each method.

Now I think forwarding Equals to Equals is okay, for obvious reasons, but for the life me I can't remember why I thought it wasn't before.

Any thoughts?