Davad...
I personally do not have a web-site....I know precious-little about coding one, hence I don't have one.
I RELY/DEPEND on sites such as Wincustomize to host my 'stuff'...as for personal 'size', one of my LiteSTEP themes here is 5 meg on its own.
Now, IF I had a private site, about oh, 2 or 3 people a year might trip over it in error, but in a communal site such as this, where my 'crap' rubs shoulders with 'real' quality, many, many MORE people will get to see my junk, so yes, Wincustomize is doing me a 'service'.
It is a mutual, symbiotic service....I help provide content [and spend hours each day helping maintain Wincusto], and Wincusto provides one 'effing' huge pipe that enables literally millions of people to see and maybe appreciate my 'content'.
Of course this content is beneficial to Stardock, but it is very definitely a two-way street.
Currently, there is a Company in the US, called Stardock paying all the costs incurred by me for displaying my work on the biggest skinning site on the net. It costs me nothing [financially], and to push the point harder, Irrespective of my position here as a wizop, I appreciate their hosting of my stuff to the point that I still have bought the 2 CD compilations, and a Tee Shirt....just to show MY gratitude and support.
It is way too easy to presume that 'without the skinners there'd be no site content and no site', but please remember too that without the site there'd be no communal skin archive to attract the public, and ultimately no 'skinners' [as a collective noun, but rather just a disparate bunch of individuals].
The 'community' that is generated by a skinning site is far more significant than the sum of its parts...