Thanks everybody!
Yes, I plan creating new collections, and all your suggestions are really wellcome.
Yes, I've corrected that hyperlink, and several other mistakes on the web, thanks for pointing out. The problem is that, not being an english native speaker myself, is very difficult to avoid serious orthographic and grammatical mistakes here and there. So, if there's somebody out there wishing to help me to correct the text (it shouldn't take more than one hour, I think, and of course I'd offer him or her the download links for free and a BIG thank you), please contact me (PM here or through the web).