There are then a number of authorities as to what may be regarded as constituting special circumstances. According to some, the ordinary rule in an appeal is that the poverty of the appellant is sufficient in itself to ground an order for security for costs of the appeal. Thus, for example, in Scerri v Northam Holdings Pty Ltd [1967] VicRp 76; [1967] VR 674 and Smail v Burton [1975] VicRp 76; [1975] VR 776, it was said that it is the long and well established practice of the Court that the inability of an appellant to pay a successful respondent's costs of an appeal constitutes special circumstances justifying an order that the appellant give security. Those authorities recognise, however, that the grant of security as an exercise in discretion, and so the general rule may yield to other considerations such as the likelihood of success in the appeal, whether the appeal raises an issue of general importance, whether the appellant's impecuniosity has been brought about by the respondent's conduct, and the nature of any property involved in the appeal. According to other authorities, the proper approach is to recognise that an appellant's impecuniosity is a significant consideration in favour of making an order for security of costs for costs, but that it is not decisive of whether an order should be made, and thus that in each case it is necessary to weigh an appellant's impecuniosity in light of all the considerations arising in the case. The matter has been dealt with in this Court in recent times, and most recently, perhaps by my brother Redlich in Kenyon v Akeroyd [2007] VSCA 50. One consideration which may be relevant in that exercise is the appellant's chance of success on appeal. It has been said that entry into the merits of that appeal should be resisted unless there is a high degree of probability of failure. But a lack of prospects of success is nevertheless a significant consideration in favour of a grant of security.