I first came across this site a couple of years ago when developing the BCA Library web site (not the catalogue part of it I hasten to add). It is truly one of the worst web sites that I have come across, and what is cringingly embarrassing is the technical naivety of their "Practical Notes & Technical Support Information" (last updated in April 2008).
The reason why most people haven't of them is that they don't seem to approve of the rest of the British caving community:
"Specialist earth-sciences organizations, of which the Society is a typical example, fit uneasily into the definition of what is now commonly referred to as the "Third Sector" or "charitable organizations". A "charity" is now more usually a convenient term of legal status which almost any "voluntary sector" group or organization can seek to acquire, if only to gain the uncertain benefits that such a status will confer on the organization and / or its Members. Such a status is often attained at the expense of the long-term erosion of the original principles of the organization and also does not automatically confer the application of common-sense in the use or disbursement of its funds or assets. Such organizations can become corrupted by government, over-politicised and over-professionalised, with the consequent loss in independence of thought and action and a gross dilution in the effectiveness of the original declared purpose.
Indications of this deterioration can be evidenced, for example, by the abnormally high percentages of funds spent (wasted?) on self-administration; by the gradual adoption of salaried employees to carry out the routine tasks formerly undertaken free of charge by volunteers; by giving professionals control over more critical tasks formerly controlled by volunteers or by the acceptance of creeping commercialisation into many areas.
In our opinion, the national-level "representatives" of the British caving and speleological community have gradually fallen foul of some of the above elements and they are most certainly not alone in having done so, with many other more popular British Charities having done so long ago and usually in a more grand style of deterioration. However, in our opinion, the self-declared "National leaders" of the speleological "voluntary sector" in this country certainly need to rethink their role."
That means US.
It is worth Googling some of the leading lights of the organisation.