You folks at HTG write some awfully good articles. Not simplistic, nor too, too technical. Too often I've found articles that are "keepers," that is, super-duper articles that I'd prefer to save for future reference to my PC, perhaps in PDF format, for example. However, other than saving the entire web page, I'm not seeing an easy and neat -- with emphasis on the neat -- way to save such great topics in their entirety for future reference. If you earn more revenue by accumulating a lot of web traffic, then perhaps your customers with accounts can have an article bookmark list associated with their accounts, thus greatly increasing the value of your site while also encouraging accounts owners to return.
In any case, thanks for your great material.