Dennis, a kindred spirit (calcs and guitars - doubly exasperating!). You are clearly doing fantastic work at SEAINT and quite a lot of your guys have signed up here too following a post in the SEAINT forum from Vish.

If ExcelCalcs helps you get your good work out there then I am delighted to support your initiative in anyway I can. You may be interested in some of the enhancements to the Excelcalcs site that will be taking place over the next couple of weeks. Another Excelcalcs administrator (Katie) is working away linking the repository items with the discussion forum (see new style repository entry - there will be a discussion page for every calculation in the repository). I am hoping that this will catalyse user discussions and interaction. I believe that it could be a useful feature to give authors better quality feedback. If you upload your calculations at ExcelCalcs you have the option of subscribing to the forum topics to be kept informed about any new user comments on your excel files.

I particularly endorse your approach of keeping logic outside of 'VBA' and in native Excel - it is about transparency for me and if I am going to feel confident about using someone else's calculation I need to see exactly how it is working.